Function: The MIN500 consists of a multi-functional analogue computing circuit which is factory calibrated as either a divider, multiplier, squarer, square root extractor or rectangular weir lineariser. If the measured process variable is temperature dependent, such as flow for instance, then the MIN500 can also be factory calibrated to accept a temperature compensation input for mass flow computation.

Operational notes: The instrument is configured to carry out the mathematical function of a normalised input of 0 to 1 unit. So for a 4 to 20mA input combination the input A units will be - Input = (IA - 4)¸16 units. Input B will be computed likewise. The specifications specific to each function are as follows:

Power supply: DC powered

Function: The DIN500 consists of a multi-functional analogue computing circuit which is factory calibrated as either a divider, multiplier, squarer, square root extractor or rectangular weir lineariser. If the measured process variable is temperature dependent, such as flow for instance, then the DIN500 can also be factory calibrated to accept a temperature compensation input for mass flow computation.

Operational notes: The instrument is configured to carry out the mathematical function of a normalised input of 0 to 1 unit. So for a 4 to 20mA input combination the input A units will be - Input = (IA - 4)¸16 units. Input B will be computed likewise. The specifications specific to each function are as follows:

Power supply: mains powered

Function: The E Block is a precision function generator suitable for linearising square law signals from differential pressure or flow transmitters. The E Block accepts a single mA or Voltage input and performs a Square Root function to give a mA or Voltage signal output.

Application Notes: The major application for the E Block is the linearisation of square law signals from flow transmitters. The transmitters are measuring pressure differentials across Venturi meters, Orifice plates, and, Dall and Pitot tubes. The E Block can be used to precede a D Block to give integrated flow.

Power supply: mains powered

Function: The G Block is a straight line approximation function generator suitable for linearising the level or head of flow characteristic of rectangular and V-notch weirs.

Application Notes: The G Block will accept signals from various level transmitters including potentiometer and float types. Physical size limitations prevent the G Block from including a current drive amplifier. If transmission current outputs are required the G Block must be followed by a B Block or an I Block.

Power supply: mains powered

Function: The H Block is a straight line approximation function generator suitable for linearising the level or head of flow characteristic of rectangular and V-notch weirs.

Application Notes: The H Block will accept signals from various level transmitters including potentiometer and float types. Physical size limitations prevent the H Block from including a current drive amplifier. If transmission current outputs are required the H Block must be followed by a B Block or an I Block.

Power supply: mains powered

Function: The L, M and N Blocks are precision instruments that consist of a multi-function analogue computing circuit. The Blocks accept mA or Voltage inputs and perform Divide, Multiply and Square functions to give a mA or Voltage signal output. On the L and M Blocks one of the inputs can be a remote or local potentiometer input.

L Block = Divider = Input A ¸ Input B = Output
M Block = Multiplier = Input A x Input B = Output
N Block = Squarer = Input A Squared = Output

Power supply: mains powered

Function: The 500 Series comprises precision electronic instruments containing a multi-functional analogue computing circuit which is factory calibrated for one of the following functions:

M500 = Multiplier Output = input A x input B
D500 = Divider Output = input A ¸ input B
SRE500 = Square Root Extractor Output = / A
SQ500 = Squarer Output = input A2
L500 = Log Amplifier Output = Log input A (1 to 3 decades)
AL500 = Antilog Amplifier Output = Antilog input A (1 to 3 decades)
RW500 = Rectangular Weir Lineariser Output = input A3/2

Power supply: mains or DC

Function: The L900 Ramp Generator Mark II is a universally programmable Ramp Generator. The L900RG Mk II can be set to:

1. Ramp UP or DOWN at a User or Factory Set rate upon the closing of a digital input (with either a Ramp and Hold function or a Ramp/Reset/Ramp continuous cycle function);
   
2. Act as a count position converter (output ramps UP or DOWN as the input is pulsed with rate of ramp proportional to the pulse rate);
   
3. Ramp UP or DOWN with an external Analogue input controlling the rate of RAMP (i.e., UP-4mA=No Ramp, 20mA=Full Speed Ramp);
   
4. Ramp UP or DOWN with an external Analogue input controlling the rate of RAMP (12mA=No Ramp, 4mA=Full Speed DOWN Ramp and 20mA=Full Speed UP Ramp);
   
5. Ramp UP or DOWN upon the resultant of a comparison of two Analogue inputs (A=B No Ramp, A>B Ramp UP, B>A Ramp DOWN with the ramp rate set by the difference between the signals).

Power supply: mains or DC