Warrick a Brand of Gems Sensors Series 17 Intrinsically Safe Controls, Series 27 Intrinsically Safe Controls Catalog Page
Series 17 and 27
INTRINSICALLY SAFE CONTROLS
Intrinsically Safe Controls
Cannot Ignite Flammable Materials
Solid State Reliability
Up to 470K Ohm/cm Sensitivity (Series 17)
Internal Surge Suppression
SPST Contacts (Series 17)
SPDT Contacts (Series 27)
Can Be Used for Single Level or Differential Service
Series 17 – FM Approved
Series 17 is FM Approved for use in Class I or II, Division 1, Groups A-G hazardous
atmospheres. SPST isolated contacts. Field adjustable sensitivity by use of external
resistors.
Series 27 – UL-CSA Approved
Series 27 is UL approved for use in Class I, Groups A, B, C, D; Class II, Groups E, F, G;
and Class III hazardous locations. SPDT output contacts. UL Pilot Duty rated.
CSA Certified for Class 1, Groups A, B, C and D; Class II, Groups E, F and G; Class III
Specifications
Contact Design
Series 17 1 N.O. & 1 N.C. Isolated Contacts
Series 27 1 N.O. & 1 N.C. (1 form C)
Contact Rating (24/120/240VAC) 8 amp Resistive
Mode of Operation Direct/Inverse, factory set
Sensitivity
Series 17 0-470K ohm, field adjustable
Series 27 0-100K ohm, factory set
Primary Voltage
Series 17 24 VAC, 120 VAC, 240 VAC (+10%/-15%) 50/60 Hz
Series 27 120 VAC, 240 VAC (+10%/-15%) 50/60Hz
Secondary Voltage
Series 17 13 VAC, 4 mA
Series 27 11 VAC, 2.3 mA
Temperature -40°F to +150°F (-40°C to +65°C)
Approvals
Series 17 FM File # 1G9A1.AX
Series 27 U.L. 913 File # E44570; CSA #2174246
Connections All screw type connections
Series 17
Series 27
Applications
• Hazardous Atmospheres • Alarms
• Pumps • Sewage
• Waste Treatment • CP Industry
Dimensions
WARRICK CONDUCTIVITY SENSORS
How to Order
Use the Bold characters from the chart below to
construct a product code.
Series
17– FM Approved
Mode of Operation
A – Direct
Supply Voltage
1 – 120 VAC
Sensitivity (ohms)
D – 3K
Enclosure
0 – None
27– UL/CSA Approved
B – Inverse
2 – 240 VAC
3
E – 10K G – 100K X – (17 only)
1 – NEMA 1 4 – NEMA 4
1
3 – 24 VAC
2
XXXX17
Notes:
1. 240V standard in Series 17. Nonstandard, but available in
Series 27.
2. 24V available only in Series 17.
3. Series 27 only. Series 17 includes a
full set of resistors
(3.3K, 4.7K, 10K, 47K, 100K, 220K,
3
470K ohms) to allow modification
of sensitivity in the field. Product
code symbol in this position for
Series 17 is “X.”
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