Type 846 and Model 3311
Instruction Manual
Form 5739
February 2002
1–4
Table 1-1. Specifications
Input Signal
(1)
Standard Performance:
4 to 20 mA dc, 4 to 12 mA dc, or 12 to 20 mA dc.
Field adjustable split ranging
10 to 50 mA dc. Consult factory for split range
input. Direct action only
Multirange Performance:
4 to 20 mA dc. Consult factory for split range
input.
10 to 50 mA dc. Consult factory for split range
input. Direct action only.
Output Signal
(1)(5)
Standard Performance:.
(Consult factory for split range output)
Direct Action (Minimum span of 6 psi)
Typical outputs: 0.2 to 1.0 bar (3 to 15 psi).
Rangeability between 0.1 and 1.2 bar (1 and
18 psi).
Reverse Action (Minimum span of 11 psi)
Typical outputs: 1.0 to 0.2 bar (15 to 3 psi)
Rangeability between 1.2 and 0.1 bar (18 and
1 psi).
Multirange Performance:
Direct Action (Minimum span of 6 psi)
Typical outputs: 0.2 to 1.9 bar (3 to 27 psi), 0.4
to 2 bar (6 to 30 psi), and 0.3 to 1.7 bar (5 to
25 psi).
Rangeability between 0.03 and 2.3 bar (0.5
and 33 psi).
Reverse Action (Minimum span of 11 psi)
Typical outputs: 1.9 to 0.2 bar (27 to 3 psi), 2
to 0.4 bar (30 to 6 psi), and 1.7 to 0.3 bar (25
to 5 psi)
Rangeability between 2.3 and 0.03 bar (33 and
0.5 psi).
Supply Pressure
(1)
Standard Performance
1.2 to 1.6 bar (18 to 24 psi)
Multirange Performance
Minimum: 0.2 bar (3 psi) greater than the
maximum calibrated output pressure
Maximum: 2.4 bar (35 psi)
Standard and Multirange Performance
Minimum: 0.2 bar (3 psi)
(4)
greater than the
maximum calibrated output pressure
Maximum: 2.4 bar (35 psi)
Output Air Capacity
(2)
Standard: 6.7 normal m
3
/hr (4.0 scfm) at 1.4 bar
(20 psi) supply pressure
Multirange: 9.0 normal m
3
/hr (6.0 scfm) at 2.5
bar (35 psig) supply pressure
Steady-State Air Consumption
(1)(2)
0.3 normal m
3
/hr (0.20 scfm) at 1.4 bar (20 psi)
supply pressure
Temperature Limits
Operating:
(1)
–40 to 85
_
C (–40 to 185
_
F).
Storage:
(1)
–40 to 93
_
C (–40 to 200
_
F).
Humidity Limits
0 to 100% condensing relative humidity.
Performance
(3)
Note: The performance of all Type 846 and
Model 3311 I/Ps is verified using computer
automated manufacturing systems to ensure
every unit shipped meets its performance
specifications.
Linearity
(1)
, Hysteresis
(1)
, and Repeatablility:
0.3% of span. Reference SAMA PMC 31.1.
Temperature Effect (total effect including zero
and span):
0.07%/
_
C (0.045%/
_
F) 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.
per SAMA Standard PMC 31.1-1980, Sec. 5.3,
Condition 3, Steady State
Shock Effect:
0.5% of span, when tested per
SAMA Standard PMC 31.1, Sec. 5.4.
Supply Pressure Effect: Negligible
EMC Effects: These instruments have the CE
mark in accordance with the European
Electromagnetic Compatibility (EMC) Directive.
They meet the emissions requirements of IEC
61326-1 (Edition 1.1) for Class A equipment for
use in industrial locations and Class B equipment
for use in domestic locations. They also meet the
immunity requirements listed in table 1-2. This
table is in accordance with Annex A of IEC
61326-1 for equipment intended for use in
industrial locations.
Leak Sensitivity:
(2)
Less than 1.0% of span for
up to 5.0 normal m
3
/hr (3.0 scfm) downstream
leakage.
–Continued–
