ES-9250 Rev.5
C-HCL-A
CURRENT LOOP CHECKER
Functions & Features
• Used to perform a loop test during a maintenance, inspection or testing of an instrumentation system or plant
• Generates simulated signals at the receiver side in place of an on-site transmittter
• Compact and light weight to fit into a pocket
• Provides 4, 12, and 20 mA switchable as required
• Selectable between 2-wire and 4-wire systems
MODEL: C-HCL-A
ORDERING INFORMATION
• Code number: C-HCL-A
NOTICE
The C-HCL-A realizes stable constant current outputs; however, it is not suitable for adjustment and calibration of measuring instruments or precision instruments. Select appropriate instruments for adjustment and calibration according to rquirements.
RELATED PRODUCTS
• Test leads (Model: HCL-LEAD)
PACKAGE INCLUDES...
• Test leads (1.2 meters, red and black each one)
• AA cells (2 pieces)
GENERAL SPECIFICATIONS
Connection
: 2 mm (0.08") diameter test plugs
Housing material
: ABS resin
Mode switch
: Switchable between 2-wire loop mode and 4-wire mode
The 2-wire loop mode controls current signals supplied from the power source such as a current loop supply, to perform a loop test (sink capability), whereas in the 4-wire mode, constant current is supplied to the transmitter
(source capability).
Output range
: 0 – 24 mA DC
Output monitoring
: Directly measure output current
Monitor jack
: 2 mm (0.08") diameter
Power LED
: Red LED turns on when the power is supplied.
Continuous operating hours
: Approx. seven hours with load resistance 750 Ω, output 12 mA, and when three new alkaline AA cells are used.
Usage
: Stand ot strap holder
OUTPUT SPECIFICATIONS
■
2-WIRE LOOP MODE
Maximum input voltage
: 24 V DC nominal
(28V DC max)
■
4-WIRE MODE
Load resistance
: 750 Ω
Maximum voltage across output terminals
: 24 V DC ±0.5 V
■
COMMON SPECS
VR output range
: Adjustable with the Current Adjuster in the range of 0 to 24 mA DC
Fixed output
: Selectable with the Current Switch from 4, 12, and 20 mA
Monitor output
: Available when the Monitor Switch is held at the M side.
INSTALLATION
Power supply
: Two AA cells
Operating temperature
: -5 to +40°C (23 to 104°F)
Operating humidity
: 30 to 80 % RH (non-condensing)
Weight
: Approx. 70 g (2.47 oz) excluding batteries
PERFORMANCE (% of setting value)
Accuracy: ±2.5 %
(% of the fixed settings at 4, 12, or 20 mA)
EXTERNAL VIEW
EXTERNAL DIMENSIONS unit: mm [inch]
APPLICATION EXAMPLES