NOSHOK 1900 Series Current Loop Powered Process Indicators - Manual (Page 2)

2
INSTALLATION
When properly installed, the 1900C unit
meets NEMA 4X/IP65 requirements for indoor
use. The units are intended to be mounted into an
enclosed panel. A sponge rubber gasket, mounting
clip, two screws, and nut fasteners are provided to
install and seal the unit in the panel cutout.
Installation Environment
The unit should be installed in a location that
does not exceed the maximum operating
temperature and provides good air circulation.
Placing the unit near devices that generate
excessive heat should be avoided.
The bezel should be cleaned only with a soft
cloth and neutral soap product. Do NOT use
solvents.
Continuous exposure to direct sunlight may
accelerate the aging process of the bezel.
The following procedure assures proper installation:
1. Cut the panel opening to the specified dimensions.
Remove burrs and clean the panel opening.
2. Slide nut fastener into slot on mounting clip and then
insert mounting screw through nut on both sides of
mounting clip. The tip of mounting screw should not project
through hole on clip.
3. Slide the panel gasket over the rear of the unit to the back of the
bezel. Install 1900C unit through panel cutout.
4. Slide mounting clip over rear of unit until the clip is against back of
panel. The mounting clip and 1900C housing have a latching feature
to hold the unit in place until tightened.
Note: Hold the 1900C front bezel in place when sliding the mounting
clip into position.
5. Alternately tighten each mounting screw to ensure uniform gasket pressure.
Visually inspect the gasket for proper seal. The gasket should be
compressed to approximately 75 to 80% of its original thickness.
(Recommended torque is 28 to 36 in-oz.)
6. If the gasket is not adequately compressed and the mounting screws cannot
be tightened any further, loosen the mounting screws and insure that the clip
is latched as closely as possible to the panel.
7. Repeat Step #6 for tightening the mounting screws.
SPECIFICATIONS (Cont’d)
4. MAXIMUM VOLTAGE DROP:
3.2 V dc for 1900C-1
4.0 V dc for 1900C-2
3.2 V dc for 1900C-3 & 1900C-4
5. EQUIVALENT RESISTANCE:
1900C-1 : 800 max. @ 4 mA; 160 max. @ 20 mA
320 max. @ 10 mA; 65 max. @ 50 mA
1900C-2
: 1000 max. @ 4 mA; 200 max. @ 20 mA
400 max. @ 10 mA; 80 max. @ 50 mA
: 800 max. @ 4 mA; 160 max. @ 20 mA
320 max. @ 10 mA; 65 max. @ 50 mA
6. MAXIMUM ALLOWABLE INPUT CURRENT: 100 mA
7. SCALING RANGE:
Span: Two potentiometers provide a coarse and fine span adjustment. Span
range = 0 to 2000.
Offset: Two potentiometers provide a coarse and fine zero offset adjustment.
Offset range = -1999 to 1999.
8. LINEARITY: (@ 23°C, Less than 85% RH) ±(0.1% + 1 digit).
9. READING RATE: 2.5 per second, nominal.
10. RESPONSE TIME: 1.5 seconds to settle for a step change.
11. NORMAL MODE REJECTION: 60 dB 50/60 Hz
12. TEMPERATURE EFFECTS:
Span Temperature Coefficient: 100 PPM/°C
Offset Temperature Coefficient: 0.2 digits/°C
13. CONSTRUCTION: High impact plastic case with clear viewing window.
(Panel gasket and mounting clips included.) This unit is rated for NEMA
4X/IP65 indoor use. Installation Category I, Pollution Degree 2
14. CERTIFICATIONS AND COMPLIANCES:
UL Listed
LISTED by Und. Lab. Inc. to U.S. and Canadian safety standards, for use
in Hazardous Locations.
ELECTRICAL SAFETY
EN 61010-1, IEC 1010-1
Safety Requirements for electrical equipment for measurement,
control, and laboratory use, Part I.
ELECTROMAGNETIC COMPATIBILITY
Notes:
1. Self-recoverable loss of performance during EMI disturbance at 10 V/m:
Process Signal may deviate during EMI disturbance.
For operation without loss of performance:
Unit is mounted in a metal enclosure (Buckeye SM7013-0 or
equivalent) connected to earth ground.
2. Self-recoverable loss of performance during EMI disturbance at 10 Vrms.
Process signal may deviate during EMI disturbance.
For operation without loss of performance:
Install 1 ferrite core or equivalent, to signal cable at
the unit.
Refer to the EMC Installation Guidelines of this bulletin for additional
information.
15. ENVIRONMENTAL CONDITIONS:
Operating Temperature: 0° to 60°C
(Derate backlight voltage to 26 V dc above 50 °C.)
Storage Temperature: -40° to 80°C
Operating and Storage Humidity: 85% max. (non-condensing) from 0°C
to 60°C.
Altitude: Up to 2000 meters
16. WEIGHT: 3.3 oz. (93.5 g)
Power mains class B
Enclosure class B EN 55011 RF interference
Emissions to EN 50081-1
Level 4; 30 A/m EN 61000-4-8 Power frequency magnetic fields
150 kHz - 80 MHz
Level 3; 10 V/rms 2 EN 61000-4-6 RF conducted interference
Level 3; 2 kV power
Level 4; 2 kV I/O EN 61000-4-4 Fast transients (burst)
80 MHz - 1 GHz
Level 3; 10 V/m 1 EN 61000-4-3 Electromagnetic RF fields
Level 3; 8 kV air
Level 2; 4 kV contact EN 61000-4-2 Electrostatic discharge
Immunity to EN 50082-2
1900C-3 & 1900C-4