Chemitec METER User manual

METER
Ultrasonic level transmitter
Factory Test Certificate
In conformity to the company and check procedures I certify that the equipment:
METER................... Production and check date: ................................
Serial n. .......................................................
is conform to the technical requirements on Technical Data and it is made in conformity to the Company procedure
Quality Control Manager .................................
Warranty
Products supplied by the Company are guaranteed for a period of 12 (twelve) months from delivery date according to the
conditions specified in our sale conditions document.
The Company can choose to repair or replace the Product.
If the Product is repaired it will mantein the original term of guarantee, whereas if the Product is replaced it will have 12
(twelve) months of guarantee.
The warranty will be null if the Client modifies, repair or uses the Products for other purposes than the normal conditions
foreseen by instructions or Contract.
In no circumstances shall the Company be liable for direct, indirect or consequiential or other loss or damage whether
caused by negligence on the part of the company or its employees or otherwise howsoever arising out of defective goods
Technical Data
Housing material: PC or Al / PP wetted part
(PVDF for ATEX certified vers.)
Mechanical installation: 2”GAS M (PP flange DN80 opt.)
Protection degree: IP67
Electrical connection: Internal push connectors
Working temperature: -30 ÷ +70°C; +80°C non-continuous
-20 ° to +60 ° C for ATEX certified vers.
Pressure: from 0,5 to 1,5 bar (absolute)
Power supply: 2-wire: 20÷30 Vdc / 4-wire: 24Vdc
Power consumption: 2-wire max 0,6W / 4-wire max 1,5W
Analog output: 4÷20mA, max 750ohm (4-wire)
Relays output: (4-wire only) n°2 3A 230Vac (n.o.)
Digital communication:MUDBUS RTU for 4-wire vers.
(opt.) HART for 2-wire vers.
Max measure range: max 0.25÷5m
max 0.4÷8m
[In case of non perfectly reflecting surfaces, the maximu distance
value will be reduced]
Blind distance: 0,25m (5m vers.) / 0,40m (8m vers.)
Temperature compensation: digital from -30 to 80°C
Accuracy: ±0,2% (of the measured distance)
not better than ±3mm
Resolution: 1mm
Calibration: 4 buttons or by HART/MODBUS RTU
Warm-up: 5 minutes typical
LCD Display: Plug-in display/keyboard 4 buttons matrix LCD
Ex-proff: ATEX II 1/2G Ex ia II C T6

METER - Safety / Mechanical installation
2. INSTALLATION
2.1 MECHANICAL DIMENSIONS
The METER transmitter has the 2 "GAS M threaded, equipped with 2" BSP/ PP fixing bolt. DN80 PN6 UNI 1092-1/PP
flange is available (optional accessory).
F/G/M/N housing codes U housing code
1. SAFETY
1.1 Installation precaution
a) Installation shall only be performed by qualified personnel and in accordance with local governing regulations.
b) Make sure that the working temperature is between -30 and +70 ° C, +80 ° C non-continuous
(ATEX versions: -20÷+60°C).
c) Install the transmitter in a its physical characteristics and housing/sensor construction materials compatible environment.
d) The transmitter must be used safety warnings observance.
e) Improper transmitter use would cause serious damage to people, to the product and connected equipment.
DN80 PN6 UNI 1092-1/PP flange
(optional accessory)
Fig.1 Fig.2 Fig.3
Anticondensation
filter (M/N code)
The non intrusive system application is now preferred in the level measurements field. For this reason the Company
developed the METER unity to best meet the "GENERAL-PURPOSE" application requests. The METER unit offers,
together with its compact size, a complete versions range that makes the METER very versatile for the most varied
applications, including areas with explosion hazard and chemically aggressive environments. METER is an ultrasonic level
transmitter, temperature-compensated and suitable for connection with MODBUS RTU (only 4 wires vers.) or HART (option
only for 2-wire vers.) acquisition systems. METER is a compact unit which in addition to an analog output includes two freely
addressable relay (only 4 wires vers.).
Non-contact level measurements
Suitable for liquids and granulates level
measurement
Integrated digital temperature sensor
to compensate the measure
HART or MODBUS RTU com. protocol
24Vdc power supply
Mechanical protection: IP67 / IP68 (sensor)
Output: 1 4÷20mA analog output
2 relays output (4-wires vers.)
ATEX II 1/2G Ex ia II C T6
2
METER
ULTRASOUND LEVEL TRANSMITTER
DATA SHEET

METER - Connections and Configuration
3. CONNECTIONS
3.1 Wiring
1) Separate the engine control cables or power cables from the METER connection cables..
2) Open the cap by unscrewing.
3) Lead the cables into the transmitter through the glands.
4) Do not use sleeves terminals, because they might interfere with the VL601 module insertion
5) Close the cap and tighten the cable glands.
3.2 Humidity infiltrations
4. CONFIGURATION MODES
The METER have 2 configuration/calibration modes:
- via digital communication:
via MODBUS RTU, by PC, for 4-wires versions
via HART, by Hand-Held or PC, for 2-wires versions (optional)
- via VL601 programming module
4.1 Via MODBUS RTU
4.1.14-wires METER; MODBUS RTU PC connection (fig.21)
1) METER4____ or METER8____ (1) with MODBUS RTU communication protocol
2) USB/RS485 interface module, cod.694A004A
3) MODBUS RTU communication S/W, cod.010F105A (3), for METER transmitter
With this software is possible:
- connect, by selecting the UID address, the METER transmitters in MODBUS RTU network
- read on your PC monitor all measures in reading and METER operation data
- programming all METER configuration parameters
- storing on files, data logger function; METERmeasures in reading and operating states
Fig.19
2-WIRE VERSION 4-WIRE VERSION
Fig.17 Fig.18
To avoid the humidity infiltration inside the housing is recommended:
- for electrical connections, use a cable with a 6÷12mm outer diameter and
fully tighten the M20 cable gland
- fully tighten the cap
- position the cable so that it forms a downward curve at the M20 output
(Fig. 20); in this way the condensation and/or rain water will tend to drip
from the curve bottom
For installations with a strong humidity/vapor presence the version with
the optional anti-condensation filter (cod.M/N) is available Fig.20
ATEX 2-WIRE VERSION
The immunity to electromagnetic interference complies with Directives
5
METER
ULTRASOUND LEVEL TRANSMITTER
DATA SHEET

METER - Configuration
4.2 Via HART
4.2.1 2-wires METER; HART Hand Held connection or HART PC/MODEM (fig.23)
1) METER-___, METER0___, METER2___, METER7___, with HART communication protocol
2) 250ohm resistence
3) HART MODEM
4) HART communication S/W, cod.010E105A (for PC HART MODEM only)
5) HART HAND-HELD
Fig.23
Fig.21
Fig.21
4.3 via VL601 configuration
The VL601 programming module can be mounted and removed from the
METER without affecting the unit operation. Unscrewing the cap, the VL601
module can be mounted (by clockwise rotation until it clicks) or dismounted
(by rotation counterclockwise) as shown in Fig.21. The VL601 module is
equipped with matrix LCD.
displayed at the bottom indicates the correct echo signal reception
displayed at the top alerts that there is a generic error; press to show
the message that indicates the present error type.
The METER returns automatically to RUN mode.
6
CHEMITEC s.r.l.
Via Isaac Newton 28 - 50018 Scandicci (FI)
Tel. [phone] fax [phone]
Web site: www.chemitec.it
E-mail: [e-mail]
METER
ULTRASOUND LEVEL TRANSMITTER
DATA SHEET