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Series 830/840/860 Instruction Manual
Chapter 2 Installation
IM-83/84/86-H
2-1
Chapter 2 Installation
Quick-Installation Instructions For
830/840 L, M and H Meters And Controllers
1. NEVER TEST FOR LEAKS WITH LIQUID LEAK DETECTOR. If
liquid seeps into the electronics or the sensor compartment below,
the instrument may be damaged. Use a pressure-decay test in-
stead.
the instrument may be damaged. Use a pressure-decay test in-
stead.
2. Install an appropriate in-line filter upstream if the gas contains
any particulate matter or condensed moisture. (A 15-micron par-
ticulate filter for full-scale flows up to 30 liters/minute is recom-
mended, 30 micron for flows above 30).
ticulate filter for full-scale flows up to 30 liters/minute is recom-
mended, 30 micron for flows above 30).
3. Mount with a horizontal gas-flow. This orientation is preferable
unless the factory calibration was specifically performed for a ver-
tical flow. Consult your calibration certificate. (Horizontal flow is
assumed unless vertical flow upward or downward is specified).
tical flow. Consult your calibration certificate. (Horizontal flow is
assumed unless vertical flow upward or downward is specified).
4. DO NOT APPLY POWER TO THE OUTPUT LOOP on units
equipped and calibrated for a 4-20 mA output signal. This is NOT
a loop-powered device. Damage will occur.
a loop-powered device. Damage will occur.
5. Wire the instrument per the diagrams on the back of this card or
the Operator’s Manual, Chapter 2. Controllers require a separate
ground wire for the Valve Return signal as well as a Setpoint sig-
nal (no wire connected to the setpoint may cause the valve to float
open).
ground wire for the Valve Return signal as well as a Setpoint sig-
nal (no wire connected to the setpoint may cause the valve to float
open).
6. Apply the gas listed on the label to the inlet at the recommended
inlet pressure as listed on the calibration certificate. On a meter,
obtain this pressure by blocking off the flow downstream. On a
controller, confirm that there is no gas flowing through it with a
zero setpoint. (If there is a flow, consult the Valve Adjustment
Procedure in the manual).
obtain this pressure by blocking off the flow downstream. On a
controller, confirm that there is no gas flowing through it with a
zero setpoint. (If there is a flow, consult the Valve Adjustment
Procedure in the manual).
7. Apply power and verify or adjust the zero setting after allowing
a 15-minute warm-up period. The zero adjustment potentiometer
is accessed through the upper hole in the side of the electronics
cover. (See the Operator’s Manual, Chapter 3).
is accessed through the upper hole in the side of the electronics
cover. (See the Operator’s Manual, Chapter 3).
8. DO NOT LEAVE A SETPOINT APPLIED TO A CONTROLLER
WHEN NO GAS IS AVAILABLE TO THE INLET FITTING. The
control circuit will apply the maximum voltage to the valve coil re-
sulting in eventual overheating. Damage may occur. (Instead,
consult the Operator’s Manual for use of the “Valve Off” feature).
control circuit will apply the maximum voltage to the valve coil re-
sulting in eventual overheating. Damage may occur. (Instead,
consult the Operator’s Manual for use of the “Valve Off” feature).
9.
An ANNUAL factory evaluation and calibration is recom-
mended.
mended.
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