7-9
Chapter 7. SPECIFICATIONS
Model No.
Item
MQV0050(J, K) MQV0200 MQV0500
Flow rate
display
Display method 7-segment LED, 4 digits
Setup resolution
Gas type and control range (P.7-11)
Indication accuracy (at standard
temperature and differential
pressure; Q: flow rate)
(1) ±1.5 % FS ±1 digit (80 % FS < Q ≤ 100 % FS)
(2) ±1.0 % FS ±1 digit (40 % FS < Q ≤ 80 % FS)
(3) ±0.5 % FS ±1 digit (0 % FS ≤ Q ≤ 40 % FS)
Totalizing
function
Display range 0.001 to 99,999.999 m
3
0.01 to 999,999.99 m
3
0.0 to 9,999,999.9 m
3
Display resolution 0.001 m
3
0.01 m
3
0.01 m
3
Totalized count backup timing (1) Every 0.5 m
3
(1) Every 2 m
3
(1) Every 5 m
3
(2) Every hour from the previous backup
(3) At the time the RUN key is pressed.
Analog
output
Output type
Instantaneous flow rate (PV) output or setting flow rate (SP) output (switchable)
Output scale 0 to full-scale flow rate (scale can be changed.)
Output range 0 to 5 V DC/1 to 5 V DC/0 to 20 mA/4 to 20 mA (switchable)
Max. output 7 V DC max./28 mA max. (max. output when flow rate exceeds range)
Accuracy Total output accuracy ±0.3 % FS Indication accuracy ±0.3 % FS
External load resistance Voltage output type: 250 kΩ min. Current output type: 300 Ω max.
Alarm/event
output
Number of outputs Alarm output: 1, Event output: 2
Output rating 30 V DC, 30 mA max. (open collector non-insulated output)
Totalized pulse output width 100 ms ±10 % (when pulse output is selected in the function setup)
Totalized pulse output rate 0.001 m
3
/1 pulse 0.01 m
3
/1 pulse 0.01 m
3
/1 pulse
External
switching
input
Input type, number of inputs External 3-way switching input (OPEN/GND/5V): 1
External contact input (2-way switching): 3
Required circuit type Non-voltage contact, or open collector
Contact OFF terminal voltage External 3-way switching input: 2.5 ±0.5 V
External contact input: 2.8 ±0.5 V
Contact ON terminal current Approx. 0.5 mA (current flowing to contact)
Allowable ON contact resistance 250 Ω max.
Allowable OFF contact resistance
100 kΩ min.
Allowable ON residual voltage 1.0 V max. (open collector type)
Allowable OFF leakage current 50 µA max. (open collector type)
Reference
voltage
output
Output rating 5.0 V DC ±5 %, 5 mA max.
Application Reference voltage of flow rate setting voltage and 5 V input of external
3-way switching input
Communications
Mode Dedicated loader communications
RS-485 communications (3-wire system)
*7
*8
Transmission speed 2400, 4800, 9600, 19200, 38400 bps
(loader communications: 19200 bps only)
Power Rating 24 V DC, current consumption: 400 mA max.
24
V
DC current
consumption: 500
mA max.
Allowable power voltage range
(T: operating temperature)
21.6 to 26.4 V DC
(ripple 5 % max.)
(1) 21.6 to 26.4 V DC
(–10 °C≤T≤40 °C)
(2) 23.5 to 26.4 V DC
(40 °C<T≤60 °C)
(ripple 5 % max.)
(1) 21.6 to 26.4 V DC
(–10 °C≤T≤35 °C)
(2) 23.5 to 26.4 V DC
(35 °C<T≤50 °C)
(ripple 5 % max.)
Isolation The power circuit is isolated from the input/output circuit.
Material of gas-contacting parts SUS316, Teflon, Fluororubber
Connection method 3/4-16UNF, Rc 1/2", 1/2" Swagelok, 1/2" VCR
Mounting orientation Horizontal. Be sure that display surface does not face down.
Mass Approx. 3.5 kg
Applicable standards EN61326-2-3: 2013, EN61326-1: 2013
(To be used in an industrial electromagnetic environment)
During EMC testing, the reading or output may fluctuate by the
equivalent of ±10 %FS.
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