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GHM Delta OHM HD50CR-AS Operating Manual

Low pressure transmitter / data logger
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English
Operating manual
Low pressure
transmitter / data logger
HD50CR-AS
www.deltaohm.com
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Summary of Contents for GHM Delta OHM HD50CR-AS

  • Page 1 English Operating manual Low pressure transmitter / data logger HD50CR-AS www.deltaohm.com Keep for future reference.

  • Page 2: Table Of Contents

    TABLE OF CONTENTS INTRODUCTION ....................3 DESCRIPTION ....................... 4 INSTALLATION ..................... 5 ....................6 ONFIGURATION ALARMS ........................ 8 STATISTICAL FUNCTIONS ................... 10 CALIBRATION ..................... 11 MENU ........................12 MODBUS ......................17 TECHNICAL CHARACTERISTICS ................23 10 INSTRUMENT STORAGE ..................26 11 SAFETY INSTRUCTIONS ..................

  • Page 3: Introduction

    1 INTRODUCTION HD50CR-AS is a relative or differential low pressure transmitter and data logger de- signed for wall flush-mounting. Measuring range ±100 Pa. A silicon piezoresistive sensor with high accuracy and temperature compensation is used, which allows excellent linearity, repeatability and stability over the time. The auto-zeroing feature allows stable measurements over the time without the need to recalibrate.

  • Page 4: Description

    2 DESCRIPTION Pressure inputs Terminal header LEDs Inputs for pressure calibration Display Keyboard USB port with protective cap Fixing holes Input for optional T/RH probe Buttons: Scrolls the real time measurement on the display. In menu, increases the displayed value or move to the next parameter. Displays the statistical functions (MIN, MAX, AVG).

  • Page 5: Installation

    3 INSTALLATION Make a 196 x 70 mm cut in the wall, at least 46 mm deep, and 4 holes according to the drilling pattern shown below, then wall mount the instrument by using the 4 holes on the front panel. The connections on the upper part of the housing are as follows: RS485 port Pressure input (+)
  • Page 6 OUT x (x=1, 2, 3) OUT x (x=1, 2, 3) 24 Vac dc Current analog Voltage analog Power supply output connection output connection connection The three analog outputs are associated with the quantities of index CH1, CH2 and CH3 set in the F200 menu via the front keyboard of the instrument (see chapter 7) or via the HD35AP-S software.

  • Page 7: Configuration

    3.1 C ONFIGURATION The operating parameters of the instrument can be configured in various way: • Via front keyboard (see chapter 7). • Via the HD35AP-S application software, connecting the instrument to the PC via USB. • Via the Modbus-RTU protocol and the RS485 connection (see chapter 8). The HD35AP-S application software is downloadable from Delta OHM website For the use of the application software, see the corresponding instructions.

  • Page 8: Alarms

    4 ALARMS For each detected quantity, two alarm thresholds can be set by the user. The alarm is generated if the measured value falls below the lower threshold or rises above the up- per threshold. Exceeding a threshold is signaled: •...
  • Page 9 or not depending on whether the alarm condition is still present or not. The following example shows the silencing of the buzzer with Latch option disabled. Upper threshold 60 °C 59 °C Hysteresis Hysteresis 11 °C 10 °C Lower threshold Delay BUZZER Silencing...

  • Page 10: Statistical Functions

    5 STATISTICAL FUNCTIONS The instrument calculates and displays the maximum (MAX), minimum (MIN) and average (AVG) value of the detected measurements. In order to display the statistical information, press FUNC/: the instrument shows the maximum value of the displayed quantity. To scroll the maximum values of the various quantities use the ...

  • Page 11: Calibration

    6 CALIBRATION The instrument calibrates automatically at regular intervals (default 60 minutes, the in- terval is configurable) the zero of the differential pressure, temporarily disconnecting the pressure inputs through an internal solenoid valve. Via the Fb00 menu (see chapter 7) it is possible to perform a manual calibration in one or two points.

  • Page 12: Menu

    MENU The menu accessible via the front keyboard allows displaying the instrument infor- mation and changing operating parameters. The menu is structured in levels, with main categories and submenus. To access the menu, you need to enter the user password (configurable through the appropriate menu item) or the administrator password (supplied with the instru- ment and not editable).
  • Page 13 F100 submenu (DEV INFO) Instrument general information. F101: model F102: serial number F103: user code F104: group name F105: firmware version F106: firmware date F107: factory calibration date F108: user calibration date F109: type of calibration in use (factory or user) F110: external probe serial number F200 submenu (MEAS MENU) Selection and sorting of the quantities to be detected.
  • Page 14 F413: upper alarm threshold F414: upper alarm threshold enabling {On/OFF, default=On} F415: alarm hysteresis in % of the difference between the two alarm thresholds {0…100 %, default=2%} F416: delay time in signaling the alarm {max. 960 min, default=0} F417: buzzer enabling {On/OFF, default=OFF} F418: buzzer “Latch”...
  • Page 15 F700 submenu (AN OUT MENU) Setting of the analog outputs. F710: analog output 1 F711: 0-20 mA / 4-20 mA selection for the current output {default=4-20 mA} F712: 0-5 V / 0-10 V selection for the voltage output {default=0-10 V} F713: value of the quantity associated with the analog output corresponding to 0/4 mA and 0 V {default=-100 Pa} F714: value of the quantity associated with the analog output corresponding to 20...
  • Page 16 F900 submenu (CLK MENU) Clock settings. F901: year F902: month F903: day F904: hour F905: minutes F906: enabling of the automatic synchronization of the internal clock with a reference server {On/OFF, default=OFF} F907: time zone {default=0} FA00 submenu (PSW MENU) Password settings.

  • Page 17: Modbus

    MODBUS The device general information can be read through the function code 0x2B/0x0E: • Manufacturer (Delta OHM) • Model • Firmware version The complete list of MODBUS registers is shown below. If you try to read a register that is not present, the instrument returns the fixed value 32767. The list of the available registers can be downloaded in the PC using the function "...
  • Page 18 Coils - Read/Write parameters Address Type Coil description Receiving mode after transmission with Modbus protocol: 0=violate protocol and go in receiving mode right after transmission 1=respect protocol and wait 3.5 characters after transmission Logging status: 0=active, 1=inactive Logging mode: 0=non cyclic, 1=cyclic Set 1 to delete the device logging memory.
  • Page 19 Address Type Coil description Enabling of the buzzer “Latch” function for the quantity #6: 0= disabled, 1=enabled Type of calibration used: 0=factory, 1=user Set 1 to carry out the zero calibration of the differential pressure. Bit ze- roing is automatic. Enabling of the auto-calibration of the zero of the differential pressure: 0=disabled, 1=enabled Input Registers - Read-only parameters...
  • Page 20 Holding Registers - Read/Write parameters Address Type Holding Register description Measurement alarm thresholds RH lower alarm threshold in % (x10). RH higher alarm threshold in % (x10). lower alarm threshold in the set measurement unit (x10). EW POINT Dew point higher alarm threshold in the set measurement unit (x10). lower alarm threshold in g/m (x10).
  • Page 21 Address Type Holding Register description 10065 Buzzer silencing time, in minutes, for the quantity #1 10066 Buzzer silencing time, in minutes, for the quantity #2 10067 Buzzer silencing time, in minutes, for the quantity #3 10068 Buzzer silencing time, in minutes, for the quantity #4 10069 Buzzer silencing time, in minutes, for the quantity #5 10070...
  • Page 22 Address Type Holding Register description da 20036 User code with ASCII codification of the quantity #4. a 20047 da 20048 User code with ASCII codification of the quantity #5. a 20059 da 20060 User code with ASCII codification of the quantity #6. a 20071 Measurement alarm hysteresis and delay time 30002...

  • Page 23: Technical Characteristics

    TECHNICAL CHARACTERISTICS Differential Pressure Sensor Piezoresistive Measuring range ± 100 Pa Resolution 0.1 Pa Accuracy ± (0.8% of measure + 0.5) Pa @ 0…50 °C Zero drift Self-calibration Units of measurement Pa, mmH O, mbar, inH O, mmHg, hPa Connection ∅...
  • Page 24 General characteristics Display Red electroluminescent Keyboard Yes (4 keys) Configuration Via front keys, USB and RS485 Modbus connection Alarm Buzzer on and LED lighting Analog output 3 x 0/4…20 mA (active, max. load 500 Ω) or 3 x 0…5/10 V (min. load 10 kΩ) galvanically isolated Yes, HID type (no USB drivers) with front Mini-USB type B connector RS485...
  • Page 25 Dimensions (mm): MENU FUNC Ø3 (x4) HD50CR-AS V1.1...

  • Page 26: Instrument Storage

    10 INSTRUMENT STORAGE Conditions for storage of the instrument: • Temperature: -10...+70 °C. • Humidity: below 90 %RH no condensation. • When storing, avoid places where: humidity is high; • instrument is exposed to direct solar radiation; • instrument is exposed to high temperature source; •...

  • Page 27: Probes And Accessories Ordering Codes

    12 PROBES AND ACCESSORIES ORDERING CODES HP3517E… Temperature and relative humidity combined probe. Pt100 temperature sensor. Measuring range: 0…100 %RH, -40…+150 °C. 8-pole M12 female connector. CABLE LENGTH: HP3517 E 2 = 2 m, 5 = 5 m, 10 = 10 m STEM LENGTH: TC1 = 135 mm (PBT technopolymer) TC2 = 150 mm (AISI 304)
  • Page 28 OTES HD50CR-AS V1.1...
  • Page 29 OTES HD50CR-AS V1.1...
  • Page 30 OTES HD50CR-AS V1.1...
  • Page 32 GHM GROUP – Delta OHM | Delta Ohm S.r.l. a socio unico Via Marconi 5 | 35030 Caselle di Selvazzano | Padova | ITALY Phone +39 049 8977150 | Fax +39 049 635596 www.deltaohm.com | sales@deltaohm.com WARRANTY Delta OHM is required to respond to the "factory warranty" only in those cases provided by Legislative Decree 6 September 2005 - n.

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