Level Sensors
Amplifier, Conductive/Capacitive
Types S 194, H 494 (Charging)
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Control of CHARGING (swimming pools)
S 194 Output: 10 A SPDT relay
H 494 Output: 8 A DPDT relay
LED-indications: Power supply and relay ON
AC power supply
S 194
H 494
Product Description
Level control relay for con-
ductive liquids for swimming
pool applications. The relay
operates approx. 10 s after
the sensor is no longer im-
mersed in the water. Amplifier
for A94-.. sensors.
Ordering Key
Housing
Type/function
Output
Power supply
S 194 156 024
Type Selection
Plug
Circular, 11 pin
Screw terminals
Output
SPDT
DPDT
Supply: 24 VAC
S 194 156 024
H 494 166 024
Supply: 115 VAC
S 194 156 115
H 494 166 115
Supply: 230 VAC
S 194 156 230
H 494 166 230
Output Specifications
S194
Output
Rated insulation voltage
Contact ratings
(Ag-CdO)
Resistive loads
Small inductive loads
Mechanical life
Electrical life
Operation frepuency
Insulation voltages
Rated insulation voltage
Rated impulse withstand voltage
SPDT relay
250 VAC (rms)
(Cont./elec.)
µ (micro gap)
10 A/250 VAC (2500 VAC)
1 A/250 VAC (250 W)
10 A/25 VDC (250 W)
2.5 A/230 VAC
5 A/24 VDC
≥
5 x 10
7
operations
≥10
5
operations
≤
7200 operations/h
≥
2.0 kVAC (rms)
(Cont./elect.)
None
4 kV (1.2/50 µs)
(cont./elect.) (IEC 60664)
800 V
H494
DPDT relay
250 VAC (rms)
(Cont./elec., cont./cont.)
µ (micro gap)
8 A/250 VAC (200 VA)
0,4 A/250 VDC (100 W)
4 A/25 VDC (100 W)
2.5 A/230 VAC
5 A/24 VDC
≥
30 x 10
5
operations
≥125
x 10
16
operations
≤
7200 operations/h
≥
2.0 kVAC (rms)
(Cont./elect.)
None
4 kV (1.2/50 µs)
(cont./elect.) (IEC 60664)
800 V
AC 1
DC 1
or
AC 15
DC 13
AC
DC
AC
DC
Specifications are subject to change without notice (25.06.99)
1
194, H 494
General Specifications
Indication for
Power supply ON
S194
H494
Output ON
Environment
Degree of protection
Operating temperature
Storage temperature
Connection
S194
H494
Material
Housing
Plug
Approvals
CE-marking
LED, red
LED, green
LED, red
IP 20 B
-20° to +50ºC (-4° to +122ºF)
-50° to +85ºC (-58° to +185ºF)
11-pin circular plus
Screw terminals, for
mounting on DIN-rail
Noryl SE1
PC/ABS blend
Nickel-plated brass
CYCOLOYC 2100
UL, CSA
Yes
Accessories
Conductive level probe:
Capacitive level probe:
A 94-10
A 94-20
Input Specifications
Sensor type
Conductive
Capacitive
Sensor voltage current
Conductive
Capacitive
A 94-10
A 94-20
24 VAC, 2.5 mA
8.2 VAC, max. 8 mA
S194
H494
S194
H494
Wiring Diagrams
S 194 (conductive)
S 194 (capacitive)
H 494 (conductive)
H 494 (capacitive)
Operation Diagram
Conductive/capacitive
Power supply
Sensor in water
Relay ON
2
Specifications are subject to change without notice (25.06.99)
