KROHNE OPTISONIC 7060 EN User Manual
Page 10
OPTISONIC 7060
Electrical & mechanical installation manual 730962.31.00 page 10 of 52
Other information
Meter characteristics
Number of measuring paths
< DN80 (4”): 1; >= DN80: 2
Min. Gas velocity
1 m/s (for standard accuracy)
V
min
/v
max
Min.: 1:30
Measuring medium
Gas process
gas,
air
Pressure range
From ambient pressure to 103 bar; higher pressure on request
Temprature range
Standard: -25 °C to + 100 °C
Extended: -25 °C to +180 °C
Measuring accuracy
Reproducibility
< 0.2 of the measured value
Typical measuring uncertainty * < ± 1% of measured value for a flowspeed > 1 m/s (3 ft/s) (2 acoustic path's)
< ± 2% of measured value for a flowspeed > 1 m/s (3 ft/s) (1 acoustic path)
Outputs
Measuring quantities
Act. volume flowrate, act. volume, gas velocity, velocity of sound
Pulse and status outputs
Passive; electrically isolated; open collector; U
Imax
= 30 V, I
Imax
= 100 mA, f
max
= 6
kHz, pulse width = 0.05…1 s or in accordance with NAMUR (EN50227)
Measuring rate
20 measurements /s
Interfaces
MODBUS (RS 485)
ASCII protocol, for parameterisation, measured value inquiry and diagnosis
(9600,8, N.1)
Explosion protection
Europe
II 2G EEx de ib [ia] IIA or IIC T4 in accordance with RL94/9/EG (ATEX) **
Ultrasonic signal converter intrinsically safe “ia”
Power supply
Operating voltage
Voltage limits
When supplied through solar-
panel-fed battery
U
min
= 12 V DC, U
max
= 28.8 V DC
Start-up voltage: 11.8V
Turn-off voltage for integrated total discharge protection: 10.8V
Typical power consumption
<1 W (approx. 37 mA at 24 V DC, approx. 66 mA at 12 V DC)
Ambient conditions
Temperature range
ATEX: - 20 °C to + 60 °C (- 40 °C to + 60 °C on request)
CSA: - 40 °C to + 60 °C
Storage temperature
- 40 °C… + 60 °C
Type of protection
IP 67
Relative humidity
< 95 %
* Related to the measured value in the range 0.1…1 Q
max
with min. straight inlet length of 10
DN and min. straight outlet length of 5 D, for calibrated measuring system
Important
When used in hazardous areas, comply with the required type of explosion protection during
installation (intrinsically safe or increased safety)!
IMPORTANT