501 Manual 501 Manual 501 Manual
This installation manual applies to:
-209820 501 Electrode Control 115 VAC
-202820 501 Electrode Control 230 VAC
-202830 501 Electrode Control 12 VDC
General
The 501 Electrode Control is a simple and price competitive system
for level control in conductive liquids. The system includes a
transmitter for DIN-rail mounting and various level electrodes.
Special Features
• Price competitive and reliable system for level control in
conductive liquids
• The amplifier is easily mounted on a DIN-rail
• The electrodes can be suspended by a cable or threaded directly
to a Lexan and Noryl plastic electrode base housing with a 1”
thread (see diagram at far right)
• The electrode base housing can be mounted on a special acid-
proof MJK 316 SS sensor brackets (200219 and 200220) which
can be wall mounted, pipe or rail mounted (using Universal
Brackets 200205) or mounted on a wall with an extension arm
(200210 plus 200215)
Function
The transmitter generates an alternating voltage applied to the
electrodes. When the liquid connects the electrodes, the current
running between these is amplified and the output relay is activated.
Two electrodes can be connected to the unit for the detection of
one level, or three electrodes can be connected for the detection of
two levels; one for start and one for stop. In cases where the liquid
is in a conductive tank, or where for example a metal pipe is in
constant contact with the liquid, the tank or piping can be
substituted for one of the electrodes by simply attaching a wire to it
and the connection housing, usually as a common contact. (see
diagram top middle).
Terminal Connections
8
9
12 13 14
1
3
10
CNONC
SUPPLY
STOP
START
COMMON
COMMON
Terminal 13 must always be connected to the high-level electrode.
This also applies if you change from pumping out (default) to
pumping in. Only here it will function as the STOP electrode.
Settings for pumping out / pumping in
The 501 Electrode Control is set up from the factory to pumping
out (emptying). This setting can be changed to pumping in (filling)
by moving a jumper inside the cabinet as shown below:
115 VAC / 230 VAC 12 VDC
Filling
Emtying
Relay
Fuse
Filling
Emtying
Relay
Fuse
Emptying
Filling
Filling
Emptying
1 3
P0
Supply
1 3
+
-
Supply
Part numbers
209820 501 Electrode Control / 115 VAC
202820 501 Electrode Control / 230 VAC
202830 501 Electrode Control / 12 VDC
202850
Level electrode (19 ft cable; normally not used
with electrode base)
202860 Electrode base with level electrode (1m rod)
202864 Electrode base with 4 level electrodes (1m rods)
202865 Level electrode for use with p/n 202860 (1m rod)
Specifications
Part numbers 209820 (202820) 202830
Dimensions 86 x 52,5 x 58 mm (h x w x d)
Mounting On DIN-rail
Power supply
115 (230) VAC±10%
11-16 VDC
Consumption (relay off) - <1mA
Comsumption (relay on) Approx. 4VA 40mA
Temperature range
-4°F to +140°F (-20°C to + 60°C)
Materials Cover
Base
Lexan (grey)
Noryl (black)
CE approvals EN50081-1, EN50082-1
Enclosure IP22
Relay output Voltage-free switch
(max. 250V, 4A resistive,1A inductive)
Electrodes 202850 202860 (64) 202865
Description Single
electrode
Electrode base
incl. one (four)
electrode rod(s)
Additional
rod for p/n
202860
Enclosure IP68 IP65 IP68
Mounting Suspended in
19.6 ft cable
incl. 5.9”
electrode
Mounted with M5
thread
Mounted in
base with
M5 thread
Length 5.9” / 150mm 39.4” / 1000mm 38.4” /
975mm
Materials AISI 316 POM / AISI 316 AISI 316
Dimensions
501 Manual US 081104
(4 pages)
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