Product sheet AC9.48
Accessory Type HRH
HRH Electronic Level Controllers
HRH Level Controllers monitor fluid level in wells, tanks, pools and
reservoirs. HRH level controllers can be used to monitor up to two
tanks with single point switching (empty or full tank), or to monitor
one tank for two levels. HRH works by means of two
sensors,which measure resistance of fluid. For measuring signal is
used intermittent voltage 5V/50Hz. Using the alternating signal
increased oxidation of sensors is prevented , polarization and
electrolysis of fluid.
By DIP switch could be control two independent levels or use
combined function for monitoring of one level. Relay is equipped
by regulation of sensitivity to changing resistance of fluid. By
setting sensitivity according to real condition it is possible
eliminate misreadings (e.g.pollution of sensors, grounds, humidity
etc.). For every sensor can be set up a delay in range 0.5-10s and
by DIP switch the type of delay (at switch on and off relay, choice
is made according to application requirement).
Features
• Single Switch with Double State Monitoring
• Two independent switches with single state switching
• Fill in or emptying control
• Galvanically Separated Supply
• Single Switch with Single State Monitoring
Model Type
Technical Data
Model
Description
HRH-1
Level Controller, 230Vac Supply
SHR-2
Level Sensor for HRH
Power Supply
230Vac or 24Vac/dc, <4.5A
Inputs
3 SHR Sensor Inputs, Maximu Level, Minimum Level, Common
Measuring Circuit
Hysteresis: 5kOhm .. 100 kOhm
Voltage on Electrode: AC 5V
Current via Sounders: AC <1mA
Time Reaction: max. 400 ns
Max Cable Capacity: 4 nF
Length of cables: Max. 100m
Time Delay tD: adjustable 0.5 .. 10s
Time Delay tH: adjustable 0.5 .. 10s
Accuracy
+/-5%
Output
Number: 2 x changeover
Rated Current: 16A / AC1
Breaking Capacity: 4000VA / AC1, 384W /DC
Inrush Current: 30A / < 3s
Switching Voltage: 250V AC1 / 24V DC
Op Temperature
-20..+55°C
Storage Temperature
-30..+70°C
Protection Class
IP40
Dimensions
W52 x L90 x D65 mm
Online store: www.syxthsense.com
Enquiries: T: 0844 840 3100 F: 0844 840 3200
PS AC9.48 - 1/4
SyxthSense Ltd
DESCRIPTION SETTINGS
Description of Buttons
Selection of delay type ofi Input H
Selection of delay type ofi Input D
Inversion off unction ofi nput D
Function selection: double/single level relay
Indication
of supply voltage
HRH-1
Un
Output contact
relay 1
Function 2x
Input inverse OFF
Delay type D ta
Delay Type H
ta
1x
ON
tb
tb
4
Adjusting delay
input H
6
2
H
8
0.5
10
tH [s]
30
50
20
Output contact
relay 2
D
ELK O
70
10
90
5
100
R [k ]
4
Adjusting delay
input D
6
2
8
0.5
10
tD [s]
Adjusting sensitivity of sounder
according to liquid resistance
FUNCTIONS
HRH works by means of two sensors,which measure resistance of fluid. For measuring signal is used
intermittent voltage 5V/50Hz. Using the alternating signal increased oxidation of sensors is prevented
, polarization and electrolysis of fluid.
By DIP switch could be control two independent levels or use combined function for monitoring of one
level. Relay is equipped by regulation of sensitivity to changing resistance of fluid. By setting
sensitivity according to real condition it is possible eliminate misreadings (e.g.pollution of sensors,
grounds, humidity etc.). For every sensor can be set up a delay in range 0.5-10s and by DIP switch
the type of delay (at switch on and off relay, choice is made according to application requirement).
Function Diagram
C
D
H
C
D
H
C
D
H
C
D
H
2 independent single level switches.
Relay closed when container is empty.
A1-A2
Out1
(15-18)
tA
tB
Re2
(25-28)
tA
DIP 3 = tA
DIP 3 = tB
DIP 1 = 1x
DIP 2 = ON
tB
Input D is inverted when DIP 2 is
in position OFF, relay is closed
when the container is full.
DIP2 = OFF.
Function H is the same as
in previous adjustment.
DIP 4 = tA
DIP 4 = tB
tA
Out1
(15-18)
tB
DIP 3 = tA
DIP 3 = tB
tA
Out1
(15-18)
tB
DIP 3 = tA
DIP 3 = tB
Out2
(25-28)
tB
tA
tB
DIP 4 = tA
DIP 4 = tB
Out1
(15-18)
tA
Monitoring liquid in container.
DIP 1 = 1x
DIP 2 = ON
Relay 1 closed when bottom sounder
is disconnected (liquid is being pumped in).
Relay 2 closed (break contact used),
when upper sounder is connected
(liquid is being pumped out).
tB
DIP 3 = tA
DIP 3 = tB
Out2
(25-26)
Both sounders in one container.
DIP 1 = 2x
DIP 2 = ON
Relay 1 - closed when container is full
- opened when bottom sounder is discon.
Relay 2 - closed when bottom sounder is discon.
- opened when upper sounder is closed
tA
tB
DIP 4 = tA
DIP 4 = tB
Online store: www.syxthsense.com
Enquiries: T: 0844 840 3100 F: 0844 840 3200
Copyright © 2008 SyxthSense Ltd. All rights reserved - 03/2008
PS AC9.48 - 2/4
SyxthSense Ltd
WIRING DETAILS
Un
A1 A2
C
D
H
S
Terminals description :
A1, A2 - supply voltage
C - wire for both sounders
D - wire of bottom soundery
H - wire of upper sounder
S - earth terminal for possible screening of cable
15-16-18 output contact relay 1
25-26-28 output contact relay 2
16 15
18
28
25
26
Dimensions
90
67.5
45
19
21
65
56.5
52
Online store: www.syxthsense.com
Enquiries: T: 0844 840 3100 F: 0844 840 3200
Copyright © 2008 SyxthSense Ltd. All rights reserved - 03/2008
PS AC9.48 - 3/4
SyxthSense Ltd
Online store: www.syxthsense.com
Enquiries: T: 0844 840 3100 F: 0844 840 3200
Copyright © 2008 SyxthSense Ltd. All rights reserved - 03/2008
PS AC9.48 - 4/4