Tuesday, 31 May 2011 01:28 Last Updated on Monday, 29 August 2011 01:06 Written by Administrator

MODEL JH200: 2-WIRE TRANSMITTER
DC INPUT, FIXED RANGE, NONISOLATED

 

JH200 PDF DATA SHEET

JH200 PDF MANUAL

    • Input Ranges from 2mV to 250Volts, 1mA to 100mA
    • Low-Drift Input Amplifier
    • Fits Standard Connection Heads
    • Quick-Check Output LED
    • -40 to +80 Degree C Operation
    • DIN Rail mounting available

The Model JH200 2-wire transmitter provides a 4/20mA current loop output proportional to a DC voltage or current input. A fixed-range device, it is precisely calibrated to your specified input range at the factory. Span may be as low as 2 millivolts or 1 milliampere dc for use with sensitive transducers, or as high as 250V or 100mA for power monitoring applications. Conformal coating protects the circuitry against condensation and corrosion in industrial atmospheres.

The JH200 is a loop-powered device. Connected in series between a 24Vdc supply and readout instruments, it receives its power from the 4/20mA output loop. A built-in LED indicates loop current: dim at 4mA, bright at 20mA. The JH200 does not provide input/output isolation.

ORDERING INFORMATION

Model Number: 

Model JH200.
Input Range: 

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

(Always 4/20mAdc.)
Power: 

(Always dc loop powered.)
DIN-Rail Mounting:  

Change model number to Model JH200-DIN. (See "Installation and Connections," below.)

The JH200 is 1-3/4 inches in diameter and is designed to fit many standard thermocouple-type connection heads. It may also be mounted to any surface using two #8 (or smaller) screws. An optional DIN-rail mounting clip (specify Model JH200-DIN) allows the transmitter to be snapped onto DIN rail. Width is 1-3/4 inches.

Connections are made to the transmitter’s terminal strip. Connections are:

"+" Terminal: Output/Power Loop. Receives current from (+) DC supply. 
"-" Terminal: Output/Power Loop. Passes on current to the next series loop device, or to the (-) supply. 
Terminal A: Input plus. 
Terminal B: No connection. 
Terminal C: Input minus.

DETAILED SPECIFICATIONS

Voltage Input Capabilities: 

2mV minimum span, +/-250V 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.)
Output:  

4/20mA, 2-wire (loop-powered) output.
Accuracy (factory calibration): 

+/-0.1% of span or 10 microvolts, whichever is greater.
Adjustability: 

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

+/-0.05% of span or better.
Response Time: 

Under 100 milliseconds.
Guaranteed Operating Temperature: 

-40 to +80 deg. C (-40 to +176 deg. F).
Temperature Stability: 

+/-(0.02% of span plus 1 microvolt) per deg. C, or better.
Power Requirements: 

DC loop-powered. Requires at least 12Vdc at the transmitter’s output terminals. 36Vdc maximum.