This is a replacement for the MIN300.

Function: Isolating signal converter which will convert a range of process signals into standard transmission voltage or current signals. The BM303 first conditions the signal before feeding it through an opto-isolating circuit. Both the input and the output stages of the instrument are powered from separate secondaries of the inverter maintaining 3 port isolation.

Options include: a Signal Inverter, a Passive Output (Current Sink), Subtractor and an Adder or Averager. In the last three cases the inputs are restricted to mA or Voltage and the BM303 can only accept two inputs.

Power supply: DC powered

This is a replacement for the MIN300.

Function: Low input impedance (10 ohms) isolating signal converter for use in 4 to 20mA loops. The BM916 will convert the 4 to 20mA signal into standard active and passive (current sink) transmission voltage or current signals. The BM916 first conditions the signal before feeding it through an opto-isolating circuit. Both the input and the output stages of the instrument are powered from separate secondaries of the inverter maintaining 3 port isolation.

Options include: a Signal Inverter

Power supply: DC powered

Function: A 4 to 20mA signal isolator that requires no external power supply. The power for the isolator is derived from the input loop. Typically the MIN310 could be used to provide a second isolated 4 to 20mA from an existing isolated loop. This would then allow two non-isolated inputs (e.g. an RTU input and a local indicator input) to monitor the same 4 to 20mA loop. If the input loop was not isolated you would need to use either a BM320 (24 Volt DC powered) or a BD320 (230/115 Volt AC powered) dual output isolator.

The MIN310 can also be used as an isolator in a 4 to 20mA output loop from a non-isolated transmitter.

Power supply: loop powered

Function: Conversion of an input signal into an isolated DC Current or Voltage output. Maintains 3 port isolation with the input and output circuits being powered from separate secondaries of the transformer.

Power supply: mains powered

This is a replacement for the DIN300.

Function: Isolating signal converter which will convert a range of process signals into standard transmission voltage or current signals. The BD300 first conditions the signal before feeding it through an opto-isolating circuit. Both the input and the output stages of the instrument are powered from separate secondaries of the mains transformer thus maintaining 3 port isolation.

Options include: a signal Inverter, a Passive Output (Current Sink), a Subtrator and an Adder or Averager. In the last three cases the inputs are restricted to mA or Voltage and the BD300 can only accept two inputs.

Power supply: mains powered

Function: Electrically isolated mA or Voltage output from a single mA input. The C Block uses a signal powered chopper to convert the input signal to a square wave, pass it through an isolating transformer, and amplify it into a load stable mA or Voltage output.

Power supply: mains powered

Function: To amplify low level, thermocouple, high impedance voltage or zero-based current signals and provide an electrically isolated Voltage output signal. The C1 Block is effectively a B Block which is followed by a chopper isolator circuit consisting of a multivibrator, isolating transformer and demodulator.

Power supply: mains powered

Function: Isolating signal amplifier which will convert a range of low and medium level process signals into standard transmission voltage or current signals.

Options include: a Current Source with a pot on the case; a ± input; Inverted Action; a Dual RTD input; an AC Current or Voltage Input; a Variable Gain input; and a Multi Input (Subtractor, Adder, Averager, High or Low Select, High, Low or High and Low Clamp) function. In the last option, the inputs are restricted to mA or Voltage and for Multi input functions, the I Block can only accept two inputs.

Power supply: mains powered

Function: A 4 to 20mA signal isolator that requires no external power supply. The power for the isolator is derived from the loop which has the transmitter/transducer power supply in it. This can be the loop with the transmitter or the loop with the load resistance as required. Typically the P Block can be used to provide an isolated 4 to 20mA loop from the output of a non-isolated transmitter. Equally the P Block can be used to provide a second isolated 4 to 20mA from an existing isolated loop. This would then allow two non-isolated inputs (e.g. an RTU input and a local indicator input) to monitor the same 4 to 20mA loop. If the input loop was not isolated you could use either a BM320 (24 Volt DC powered) or a BD320 (230/115 Volt AC powered) to provide two independently isolated outputs.

Power supply: loop powered

Function: The SC200 is a general purpose non-isolating signal converter, conditioner, transmitter, amplifier which will give a transmission level voltage or current output from a single low or medium level process signal input. The SC200 can also accept Frequency inputs from a variety of transducer types and perform Frequency to Current/Voltage conversion. For very low frequencies (less than 10Hz) see data sheet on the SI300/20.

Options include: a signal inverter; a signal limiter; an integrator; and a differentiator.

Power supply: mains or DC

Function: The SI300 is a general purpose isolating signal converter, conditioner, transmitter, amplifier which will give a transmission level voltage or current output from a single low or medium level process signal input. The SI310 is an SI300 with an edgewise analogue meter in the front panel displaying 0 to 100% of the input span. For multi-channel isolation on one eurocard see the SI320/330/340.

Options include: a signal inverter; a sample and hold function; and an isolator with integral transmitter power supply. Further options on the SI300 include; a high signal select (1 from 4); a low signal select (1 from 4); a summator (up to 4 inputs); a subtractor (up to 4 inputs); an adder/subtractor (A+B-C); a differentiator; a peak selector; a trough selector; an integrator; an Ingold dissolved oxygen transducer input; a difference between two 2 wire RTDs input; and a signal limiter.

Power supply: mains or DC

SI320 - Two Channel Isolating Signal Converter
SI330 - Three Channel Isolating Signal Converter
SI340 - Four Channel Isolating Signal Converter

Function: The instrument is a multi-channel isolating signal converter, amplifier. Each channel is capable of accepting a mA or Voltage input and giving a transmission level voltage or current output. A 19" eurocard rack can accept 12 x SI340s and therefore give 48 channels of isolation per 19" rack.

Options on the instrument include: a single input to two (SI320), three (SI330) or four (SI340) isolated outputs.

Power supply: mains or DC

This is a replacement for the MIN320.

Function: Isolating signal converter which will convert a range of process signals into two independently isolated current or voltage outputs. The BM320 is ideally suited to providing signals for both local indication/control and remote monitoring and control from the one input signal. The BM320 still maintains three port isolation with the input and both output circuits powered from separate secondaries of the DC/DC converter.

Options include: AC Current input and AC Voltage input ranges. The instrument comes as standard with both Active and Passive outputs - simply wire into the required terminals.

Power supply: DC powered

This is a replacement for the DIN320.

Function: Isolating signal converter which will convert a range of process signals into two independently isolated current or voltage outputs. The BD320 is ideally suited to providing signals for both local indication/control and remote monitoring and control from the one input signal. The BD320 still maintains three port isolation with the input and both output circuits powered from separate secondaries of the transformer.

Options include: AC Current input and AC Voltage input ranges. The instrument comes as standard with both Active and Passive outputs - simply wire into the required terminals.

Power supply: mains powered

Function: Conversion of an input signal into an isolated DC Current or Voltage output. The MIN350 instrument still maintains 3 port isolation with the input and output circuits being powered from separate secondaries of the transformer.

Power supply: DC powered

DIN350 - AC Current Input Isolating Signal Converter

Function: Conversion of an input signal into an isolated DC Current or Voltage output. Maintains 3 port isolation with the input and output circuits being powered from separate secondaries of the transformer.

Power supply: mains powered

Function: Conversion of an input signal into an isolated DC Current or Voltage output. The MIN360 instrument still maintains 3 port isolation with the input and output circuits being powered from separate secondaries of the transformer.

Power supply: DC powered

Function: Conversion of an input signal into an isolated DC Current or Voltage output. Maintains 3 port isolation with the input and output circuits being powered from separate secondaries of the transformer.

Power supply: mains powered

Function: Non-Isolating signal amplifier which will convert a range of low and medium level process signals into standard transmission voltage or current signals. If the signal needs to be isolated then the I Block should be used.

Options on the B Block include: a Current Source with a pot on the case; +/- 10 Volt Output; a High Input Impedance (100M ohm); a Variable Time Constant; a ± input; a Dual RTD input; an AC Current or Voltage Input; a Variable Gain input; a High or Low Level Clamp; a High or Low Select function; and a Multi Input (Subtractor, Adder, Averager) function. In the last four options, i.e. from Variable Gain onwards, the inputs are restricted to mA or Voltage and for Multi input functions, the B Block can only accept two inputs.

Power supply: mains powered

Function: Non-Isolating Sample and Hold function. The B S/H Block will sample the input signal upon the instigation of a command signal and output a proportional signal. The output will remain fixed until the next sample command is received.

The B S/H Block comes with a Manual/Auto switch on the front which allows the operator to convert the B S/H into normal B Block operation whereby the output follows the input signal. In Auto mode the instrument will sample on command.

Options on the B S/H Block include: a front panel mounted pot which can be used to set the sample rate between typically 3 and 60 minutes.

Power supply: mains powered

Function: Signal amplifier that will convert the input from a Load Cell or Strain Gauge (Full or Half Bridge) into a standard transmission voltage or current signal. The MIN380 supplies the transducer excitation voltage and then conditions the resulting mV signal. The MIN380 includes remote sensing input terminals to ensure that the correct voltage is applied at the transducer if it is remote from the conditioning device. The MIN380 includes as standard, zero and span potentiometers for site tuning (~±10%) and a Resistor Test Facility to simulate a known weight/force.

Options include: coarse zero and span offset calibration components; -10 to +10 Volt output; and, a passive output.

Power supply: DC powered

Function: Signal amplifier that will convert the input from a Load Cell or Strain Gauge (Full or Half Bridge) into a standard transmission voltage or current signal. The DIN380 supplies the transducer excitation voltage and then conditions the resulting mV signal. The DIN380 includes remote sensing input terminals to ensure that the correct voltage is applied at the transducer if it is remote from the conditioning device. The DIN380 includes as standard, zero and span potentiometers for site tuning (~±10%) and a Resistor Test Facility to simulate a known weight/force.

Options include: coarse zero and span offset calibration components; -10 to +10 Volt output; and, a passive output.

Power supply: mains powered

Function: The DIN901 is a 4 channel TTL Open Collector input module that gives 4 SPCO relay outputs.

Power supply: mains or DC

Function: The DIN902 is a 4 channel logic level input device (either CMOS or TTL) that gives 4 SPCO relay outputs.

Power supply: mains or DC