Dwyer Instruments SERIES 608 Catalog Page
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[76.20]
PLACES
SERIES 608
INTRINSICALLY SAFE DIFFERENTIAL PRESSURE TRANSMITTER
Ranges Down to 0.1 in w.c., FM Approved, NEMA 4X
PRESSURE
[6.35]
The Dwyer Series 608 Intrinsically Safe Differential Pressure Transmitter converts
positive, negative (vacuum), or differential pressures of clean, dry air or other nonconductive, non-corrosive gases into a standard two wire, 4-20 mA output signal. The
use of an ultra-thin silicon diaphragm enables precision measurement of differential
pressures as low as 0.1 in w.c. while withstanding high static working pressures up to
100 psig (6.89 bar). The Series 608 transmitters are FM approved intrinsically safe for
use in the specied hazardous locations when used with an approved intrinsic safety
barrier. The rugged NEMA 4X, stainless steel housing makes this transmitter ideal for
use in industrial and process plant environments.
FEATURES/BENEFITS
• High accuracy at low pressure ranges provides exceptional measurement for
ensuring tight-control and minimizing costly out of specication conditions
• Intrinsically safe for use in the specied hazardous locations meets specications
where pressure transmission and safety cannot be compromised
• NEMA 4X rated enclosure provides protection in harsh environments permitting
outdoor monitoring or in areas where dust and particulate matter exists
APPLICATIONS
• Lab fume hood control
• Clean room applications
• Flow measurements and control
• Filter monitoring
Liquid & Gas
• Furnace draft measurement
• Process control
Differential Pressure Transmitters,
MODEL CHART
Model Range (in w.c.)
608-02
608-03
608-04
608-05
608-06
608-07
608-01B
608-13B*
608-04B
*Models have a ±0.25% FS accuracy.
0 to 0.5
0 to 1.0
0 to 2.0
0 to 5.0
0 to 10.0
0 to 25.0
0 to ±0.25
0 to ±1.0
0 to ±2.0
2-11/16
[68.26]
3
3-1/4
4-1/2
[107.95]
5/8
[15.88]
SPECIFICATIONS
Service: Clean/dry air and compatible, combustible gases. (see Agency Approvals
for FM ratings).
Wetted Materials: Consult factory.
Accuracy: ±0.5% or ±0.25% FS.
Stability: ±0.5% FS/year.
Pressure Limits: 100 psig (6.89 bar); 15 psid (1.03 bar).
Temperature Limits: -20 to 185°F (-28 to 85°C).
Compensated Temperature Range: 0 to 160°F (-18 to 71°C).
Thermal Effect: 0.5% Accuracy: ±0.02% FS/°F; 0.25% Accuracy: ±0.01% FS/°F.
Power Requirements: 12-36 VDC (2-wire).
Output Signal: 4-20 mA DC.
Zero and Span Adjustments: Potentiometers for zero and span.
Response Time: 250 ms.
Loop Resistance: DC: 0 to 1045 Ω max.
Electrical Connections: Screw terminal: Two 1/2˝ female NPT conduit.
Process Connections: Two 1/4˝ female NPT.
Enclosure Rating: NEMA 4X (IP66).
Weight: 2 lb (0.9 kg).
Agency Approvals: FM approved intrinsically safe for use in Class I, Div. 1,
Groups A, B, C, D; Class II, Div. 1, Groups E, F, G; Class III, Div. 1 when wired with
approved intrinsically safe barrier. Entity parameters: V
I=12 nF; LI=0 mH.
C
OPTIONS
Use order code: Description
NISTCAL-PT1 NIST traceable calibration certicate
ACCESSORIES
Model Description
MTL5541
MTL7706
Intrinsically safe galvanic isolator
Intrinsically safe zener barrier
[82.55]
5-1/32
[127.79]
1/2 NPT
TYP 2
PLACES
1-1/2
[38.10]
1/4 NPT
TYP 2
max= 36 VDC; Imax= 250 mA;
74
DWYER INSTRUMENTS, INC.
Static Fitting Options: See page 452 (Static Pressure Tips)
Process Tubing Options: See page 453 (Gage Tubing Accessories)
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