Immerse the APS probe into the liquid, until it reaches a level quote equal
or lower to the minimum level to be measured. Connect, using a 4x6mm
pipe for compressed air, the flow regulator on the top to a pressure
reducer so that input air has a pressure between 10 and 20psi, based on
the length of the probe and specific weight of the liquid. The input air
speed up and optimize the level probing and become a physical barrier
between the liquid and the transmitter, protecting it from high
temperature or steams. It is recommended to use a dedicated air supply
pipe for every APS probe. Then connect, with another 4x6mm pipe, the
second pneumatic connection of the APS probe to the front input of the
BL transmitter.
It is recommended to install the transmitter higher than the maximum
measured level and as near as possible to the probe. Set the level of the
liquid to the maximum and adjust the screw on the flow regulator in order to obtain a
continuous and regular air bubbling from the lower end of the APS probe. To avoid
measure errors do not install the probe near the connection of suction pumps and, if a
mixer is used, it is possible to reduce the turbulence protecting the lower end of the probe
with an external pipe.
GESINT
GESINT
GESINT
GESINT
®
®
®
®
BL
Hydrostatic head level
transmitter for liquids
Installation
The warranty is valid for 12 months from purchase, and expires if instrument is improperly
used or not correctly installed on system.
Warranty
CE
mark according to
Directive 89/336/CEE,
complies with the following harmonised
regulations:
EN50081-1
,
EN 50082-2
,
EN55022
,
EN61000-4-2
,
EN61000-4-3
,
EN61000-4-4
,
EN61000-4-5
,
EN61000-4-6
,
EN61000-4-11
and
Low Voltage Directive
73/23/CEE
and subsequent modifications.
Technical data
GESINT
GESINT
GESINT
GESINT
®
®
®
®
GESINT S.R.L.
Via Enzo Ferrari 25
20010 Arluno - ITALY
Tel. +39-02-90362295
E-mail: [email protected] -
WWW.GESINTSRL.IT
Power supply:
24VAC/DC switching
Power consumption:
2VA / 1,8W max
Pressure range:
0-1000 mmH
2
O (0-9,807KPa)
0-5000 mmH
2
O (0-49,033KPa)
Accuracy:
0,5% f.s.
Analogue output:
0/4-20mA or 0/2-10V
Output impedance:
Max 750Ω (mA) or Min 1KΩ (V)
Relay output:
2 SPDT relays
Mechanical life:
min. 10
7
cycles
Electrical life:
N.O. @ 3A 250VAC : 5x10
4
N.C. @ 2A 250VAC : 2x10
5
Contact rating:
3A @ 30 VDC (resistive load)
3A @ 250 VAC (resistive load)
Programming:
2 push buttons
Protection:
IP20
Storage temperature:
from –30 to +80°C
Working temperature:
from –20 to +60°C
Relative humidity:
from 0 to 85%, no condensate
Installation:
35 mm DIN rail
Electrical connection:
Removable terminal board
Dimensions:
90(H) x 35(L) x 60(P) mm
BL device, combined with our APS probe, is a
level transmitter for liquids in open tanks.
The APS probe is made with a Ø16mm pipe,
open at the bottom end, with 2 pneumatic
connections at the top. One connection goes to
the BL transmitter and the other to an air flow
regulator that keeps the input air pressure
constant. The input pressure to the transmitter
is converted in a 4-20mA or 0-10V signal
representing the level of the liquid in the tank.
The transmitter is supplied with 2 independent
relay thresholds that can be adjusted using the
onboard programming buttons.
Rev.2
