Differential pressure transmitter

Relative and diﬀerential
pressure transmitter
Type 699M
The pressure transmitter 699M is used primarily for the monitoring of air and neutral gasses. The unit is optionally available
with one or two differential pressure sensors, which allows theobservation of differential pressure or volumetric flow at two
individual points in the system. This makes the 699M ideallysuited for a multitude of tasks in the HVAC industry.
The 699M communicates via Modbus® RTU and features two
universal inputs in addition to two analog outputs. The linkingof further sensors and control of actuators offers the option ofusing the unit as a decentralized node for existing controllers,extending in- and outputs, and lowering installation costs.
The sensors utilized by the unit are based on the unique andwell-proven ceramic strain-gauge beam technology developedby Huba Control AG.

Pressure range
0 ... 500 – 7000 Pa+ High accuracy and long-term stability via ceramic straingauge technology+ Modbus® RTU interface+ Available with one or two diﬀerential pressure sensor units+ Up to two universal inputs for 0 ... 10 V or passive temperature elements+ Two 0 ... 10 V analog outputs+ Simple installation, reduced wiring eﬀort through decentralized node

Pressure and flow

Huba Control Type 699M | Technical data subject to change | Edition 09/2020

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Technical overview
Pressure range
Relative and differential
Measuring variables

0 ... 500 – 7000 Pa
Pa, psi, mmHG, mmH2O

Operating conditions
MediumAir and neutral gases (not condensing)
0 ... +70 ºC-25 ... +50 ºC-30 ... +70 ºC

MediumAmbient
Storage
No condensation

Temperature
Tolerable overload on one side (short-term)

Ambient temperature
70 ºC

Rupture pressure
Materials in contact with medium
SensorDiaphragm
Housing
Electrical overview
Power consumption
Power supply
Voltage outputs
Universal inputs
Response timePolarity reversal protection
Wire length

P+ = 10'000 Pa / P- = 400 Pa
20.000 Pa
15.000 Pa
Ceramic Al2O3 (96%)
Silicone
Polycarbonat PC / Polyamide (PA)

< 2 VA
24 VAC/DC ±15%2x 0 ... 10 V
2x 0 ... 10 V / PT1000 / LG-Ni1000 / NTC10K / Ni1000<1s
Short circuit proof and protected against polarity reversal. Each connection is protected against crossover up to max. supply voltage.
signal wiringmax. 50 m
Modbus® wiringmax. 100 m

Protection standard
IP 54

Protection classIIIModbus®
Address range
Baudrate
FormatLine termination
HardwareStandard configuration

1-247 (40 = default if DIP = 0)9.600 - 57.600
Modbus® RTU
selectable via DIP-Switch
RS485
9600E1 (9600 baud rate, 1 stop bit, even parity)

Interface
Push button
DIP switchLED

selectable via DIP-Switch
Zero point reset, reset on factory setting
Modbus® adress, baud rate, parity and scheduling
Status indication (red, yellow, green, blue)Electrical connection
Screw terminals for wire and stranded conductors up to 2.5 mm22 x cable bushing 15 for cable Ø 3 - 6 mm
2 x cable bushing 20 for cable Ø 5 - 10 mm
Analogue outputs A01, A02
Accuracy

0 ... 10 VDCResolution
Output current
Analogue inputs AI1, AI2configured as PT1000
configured as LG-Ni1000
configured as NTC10K

Accuracy

configured as Ni1000
configured as 0 ... 10 VDC

Input resistance-50 ... +150°ºC-50 ... +150°ºC-50 ... -26°ºC-25 ... +99°ºC+100 ... +150 ºC-50 ... +150°ºC0V5V10 V0V5V
10 V< 11 mVmax. 1 mA±66 mV±95 mV±124 mV

Accuracy±0.5 K±0.5 K±1.0 K±0.5 K±3.0 K±0.5 K±5 mV±25 mV±50 mV
min. 100 kΩ

Resolution
0.1 K
0.1 K
0.2 K
0.1 K
0.5 K
0.1 K
< 5 mV< 5 mV< 5 mV

Flow calculation
Permitted K-Factor range
Calculation Formula
Measuring variables

0 ... 1500
Q = k * ΔPl/s, m3/h, m3/s

Pressure connection
Connection pipe

Ø 6.2 mm (for pipe inside Ø 5 mm)

Mounting instructions
Installation arrangementMounting
Tests / Admissions
UL
CE-conformity
EAC

TK/B25/85
3850 ppm/K
5000 ppm/K3979 ppm/K3979 ppm/K3979 ppm/K
6180 ppm/K-Factory calibration: Vertical with pressure connections downwards
Mounting bracket (integrated in case)
ANSI/UL 60730-1
acc. 2014/30/EU applied standard EN 60730-1

Weight~ 250 g
Packaging
Single packaging in cardboard
Multiple packaging (20 pcs.)

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Pressure and flow

Huba Control Type 699M | Technical data subject to change | Edition 09/2020

Accuracy
Parameter

Unit

0 ... 500 Pa

0 ... 1250 Pa

0 ... 2500 Pa

0 ... 5500 Pa0 ... 7000 Pa

Overall accuracy at +20 ºC
Overall accuracy at 0 ... +50 ºC
Resolution
Long therm stability acc. DIN EN 60770% fs% fs% fs% fs< ±1.0< ±2.0< 0.1< ±1.0< ±0.5< ±1.0< 0.1< ±1.0< ±0.5< ±1.0< 0.1< ±1.0< ±0.6< ±0.8< 0.1< ±1.0< ±0.7< ±0.8< 0.1< ±1.0

Test conditions:
25 ºC,45% rh, power supply 24 VDC1

Order code selection table
Pressure range P11)

Pressure range P2 1)

Communication
Analogue inputAnalogue output
Electrical connection
Pressure connnection

699M.

0 ... 500 Pa
0 ... 1250 Pa
0 ... 2500 Pa
0 ... 5500 Pa
0 ... 7000 Pa
without pressure connection P2
0 ... 500 Pa
0 ... 1250 Pa
0 ... 2500 Pa
0 ... 5500 Pa
0 ... 7000 Pa
Modbus® RTU
2 x universal inputs 0 ... 10 VDC, temperature (PT1000 / LG-Ni1000 / NTC10K / NI1000)
2 x 0 ... 10 V
4 x cable bushing for cable
2x Ø3 ... 6 mm + 2x Ø5 ... 10 mm incl. blanking plug
Connection pipe Ø 6.2 mm
for tube di = 5 mm without orifice
Connection pipe Ø 6.2 mm
for tube di = 5 mm with orifice23450125752550001257052550M

Accessories (supplied loose)
Connection kit for vent duct (metal), 90º angled, 2pcs (Fig. 1)
Connection kit for vent duct (plastic), straight, 2 pcs (Fig. 2)

6789X X X X X X X X X

22401

Order number
including tube 2 m longincluding tube 2 m long

104312100064

Dimensions in mm / Electrical connections

20Fig. 1 - 104312

Fig. 2 - 100064

151)

max. 10000 Pa (over pressure on one side)

Pressure and flow

Huba Control Type 699M | Technical data subject to change | Edition 09/2020

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Setting and connection elements
ABCA

Status LED

B

DIP switch

CPush button

24 V ~

Power supply 24 VAC/DC
GND

24 V ~

Power supply external devices 24 VAC/DC

A+Modbus® communication +Ref

CommonB-Modbus® communication -AO1

Analogue output 1
GND

D

AO2

Analogue output 2

AI1

Analogue input 1
GND

AI2

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Pressure and flow

Analogue input 2

Huba Control Type 699M | Technical data subject to change | Edition 09/2020

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