Monday, 06 June 2011 03:58 Last Updated on Monday, 29 August 2011 00:46 Written by Administrator

DC INPUT MULTIPLY/DIVIDE TRANSMITTERS
PLUG-IN MODULES, FIXED RANGE


JH4410I: Output = AxB, Input/Output Isolated
JH4420I: Output = A/B, Input/Output Isolated

The JH4410/4420 Series offers DC outputs representing the product or quotient of two DC inputs. Input and output ranges need not be the same; for example, the inputs could be 0/10Vdc while the output could be 4/20mA. These are fixed-range devices, precisely calibrated to your specified ranges at the factory.

Red-green Quick-Check LEDs give a quick indication of the relative output. Red is brighter at the low end, green at high, while at mid-scale both are approximately equal. Red-only indicates offscale low while green-only indicates offscale high.

Input/output isolation is standard. (The inputs are not isolated from each other.)  Available options include,  AC or DC power choices and reverse-action Option RT (decreasing output with increasing input).

UNDERSTANDING THE INPUT FUNCTIONS

Standard calibration calculates the inputs and output on a percent-of-span basis. For example, for Output = AxB with a 4/20mA input range and 0/10V output range, if both inputs are at 50% (12mA) the output will be 25% (0.5 x 0.5 = 0.25), or 2.5 volts.

Nonstandard calibrations are available, including dissimilar input ranges and input-to-output offsets. We also are able to provide Output = (AxB)/C in one unit. Please contact us with your special requirements.

ORDERING INFORMATION

Model Number:  

Select your model number from the list above. Add suffix –AC for AC power or –DC for DC power. 
Input Range:  

Specify any DC voltage or current range allowed by the "Input Capabilities" spec, below.
Output Range:  

Specify any DC voltage or current range allowed by the "Output Capabilities" spec, below.
Power:  

Specify 115Vac, 230Vac, 12Vdc or 24Vdc.
Reverse-Acting Transmitter (decreasing output with increasing input function):

Specify Option RT.
Loop-Powered Output:  

4/20mA "current sink" output stage for connection to devices whose inputs provide 24Vdc loop excitation. Specify Option LPO.
Urethane Coating:  

Specify Option "U"

INSTALLATION AND CONNECTIONS

These transmitters plug into any standard 8-pin circular ("octal") relay socket. JH Technology offers a socket suitable for DIN-rail or surface mounting  (see the Accessories page). Pin connections are:

Pin 1: Power (AC or, if DC power option, DC plus).
Pin 2: No connection.
Pin 3: Power (AC or, if DC power option, DC minus).
Pin 4: B input (plus).
Pin 5: A input (plus).
Pin 6: Input common (minus).
Pin 7: Output plus.
Pin 8: Output minus.

DETAILED SPECIFICATIONS

Voltage Input Capabilities:  

100mV minimum span, +/-20V maximum input. Offset ranges are allowed.
(Input Impedance: 200kohms or greater.)
Current Input Capabilities:  

1mA minimum span, +/-100mA maximum input. Offset ranges are allowed.
(Input Resistance: Varies with input range. Contact factory for details. 62 ohms for 4/20mA input.)
Voltage Output Capabilities:  

1 volt minimum output span, -10 to +15V absolute limit. Offset ranges are allowed. Maximum output load, 10mA (1Kohm at 10V output).
Current Output Capabilities:

1mA minimum output span, 0 to +25mA absolute limit. Positive offsets are allowed, negative outputs are not. Output drive capability, 24V (1,200 ohms max. at 20mA output).
Accuracy (factory calibration):   +/-0.2% of span or better. (For divider, applies when inputs are greater than 10% of span). 
Adjustability:

 Zero and span each are adjustable approx. +/-15% of span.
Response Time:  

Under 100 milliseconds.

Isolation:  

Power, 1,500Vac rms (2,100V peak). Input/Output 1,000Vac rms (1,400V peak).  Note:  The inputs are not isolated from each other.
Guaranteed Operating Temperature:  

-10 to +60 deg. C (14 to 140 deg. F).
Temperature Stability:  

+/-0.02% of span per deg. C, or better.
Power Requirements:

AC, 115 or 230Vrms, 50/60Hz, 2.5V-A. DC, 12 or 24V, 2.5W.