Fisher 846 Instruction Manual page 3

(1)
Input Signal
4 to 20 mA dc, 4 to 12 mA dc, or
mA dc. Field adjustable split ranging
(1)
Output Signal
Standard Performance:
bar). Rangeability between 1 and 18 psi (0.1 to 1.2
bar).
Multirange Performance:
1.2 bar), 6 to 30 psig (0.4 to 2.0 bar), and
to 33 psig (0.03 to 2.3 bar). Rangeability between
0.5 and 33 psi (0.03 to 2.3 bar).
Action: Direct (increasing input signal increases
transducer output) (Minimum span, 6 psi) or
verse (increasing input signal decreases transducer
output) (Minimum span, 11 psi)
(1)
Supply Pressure
Standard Performance
18 to 24 psig ( 1.2 to 1.6 bar)
Multirange Performance
(4)
Minimum: 3 psig (0.2 bar) greater than the maxi-
mum calibrated output pressure
Maximum: 35 psig (2.4 bar)
Steady-State Air Consumption
0.20 scfm (0.3 normal m
supply pressure
(2)
Output Air Capacity
Standard Performance: 4.0 scfm (6.7 normal
3
m /hr) at 20 psig (1.4 bar) supply pressure
Multirange Performance: 6.0 scfm (9.0 normal
3
m /hr) at 35 psig (2.5 bar) supply pressure
Temperature Limits
(1)
Operating: –40 to 185 F (–40 to 85 C).
(1)
Storage: –40 to 200 F (–40 to 93 C).
Humidity Limits
0 to 100% condensing relative humidity.
(3)
Performance
(1)
Linearity , Hysteresis
0.3% of span. Reference SAMA PMC 31.1.
Temperature Effect (total effect including zero
and span): 0.045%/ F (0.07%/ C) of span
Vibration Effect: 0.3% of span per g during the
following conditions:
5 to 15 Hz at 4 mm constant displacement
15 to 150 Hz at 2 g. 150 to 2000 Hz at 1 g.
Table 1-1. Specifications
12 to 20
3 to 15 psig (0.2 to 1.0
0.5 to 18 psig (0,03 to
0.5
Re-
(2)
3
/hr) at 20 psig (1.4 bar)
(1)
, and Repeatablility:
per SAMA Standard PMC 31.1-1980, Sec. 5.3,
Condition 3, Steady State
Shock Effect:
SAMA Standard PMC 31.1, Sec. 5.4.
Supply Pressure Effect: Negligible
Electromagnetic Interference (EMI):
tested per SAMA Standard PMC 33.1C–1978,
change in steady–state deviation is less than
0.1% of span at 30 V/m, Class 3 (wire in conduit),
ABC.
1.0% of span at 10 V/m, Class 2 (wire not in con-
duit), ABC.
Leak Sensitivity:
to 3.0 scfm (5.0 normal m
age.
Overpressure Effect: Less than 0.25% of span for
misapplication of up to 100 psi (7.0 bar) supply
pressure for less than 5 minutes to the input port.
Reverse Polarity Protection: No damage occurs
from reversal of normal supply current (4 to 20 mA)
or from misapplication of up to 100 mA.
Connections
Supply and Output Pressure: 1/4–18 NPT female
connection.
Electrical: 1/2–14 NPT female conduit connection
Adjustments
Zero and Span: screwdriver adjustments located in
terminal compartment.
Remote Pressure Reading (optional)
Jumper selectable, ON or OFF, if unit includes op-
tion
Frequency Range: 5,000 to 8,000 Hz.
Amplitude: 0.4 to 1.0 V
Required Operating Voltage
with Remote pressure Reading Off
Min. 6.0 V (at 4 mA)
Max. 7.2 V (at 20 mA)
with Remote Pressure Reading On
Min 6.4 V (at 4 mA)
Max. 8.2 V (at 20 mA)
Weight
6.5 lb (2.9 kg) excluding options
Hazardous Locations Certifications
Refer to the Hazardous Area Classification Bulletin
9.2:001 and the transducer nameplate (see figure
1-3).
–Continued–
Type 846
0.5% of span, when tested per
(1)
(2)
Less than 1.0% of span for up
3
/hr) downstream leak-
p-p
When
1–3