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1 Point type Oxygen Detection /
Alarm System
Model NV-100S
Instruction Manual
Keep this instruction manual where it is readily accessible.
Thoroughly read this instruction manual before using the equipment so it can be used safely and correctly.
New Cosmos Electric Co., Ltd.
Instruction manual No.
GAE-015
December 2003
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Table of Contents
Related Manuals for New Cosmos Electric NV-100S
Summary of Contents for New Cosmos Electric NV-100S
- Page 1 Model NV-100S Instruction Manual Keep this instruction manual where it is readily accessible. Thoroughly read this instruction manual before using the equipment so it can be used safely and correctly. New Cosmos Electric Co., Ltd. Instruction manual No. GAE-015 December 2003...
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Page 2: Table Of Contents
Table of Contents 1. Introduction..................................... 2. Safe Operation ....................................3. Unpacking....................................... 4. System Structure.................................... 5. Dimensions and Part Names ................................ 5-1 Indicator and Alarm Unit ............................... 5-2 Gas Detector..................................6. Installation and Wiring..................................6-1 How to Install the Indicator and Alarm Unit.......................... 6-2 How to Install the Gas Detector ............................ -
Page 3: Introduction
1. Introduction Thank you for purchasing an NV-100S single-point oxygen detection/alarm system. This safety device is used to monitor oxygen concentration. It indicates oxygen leakage and oxygen deficiency by alarm lamps and an alarm sound when the concentration reaches a preset level. -
Page 4: Unpacking
Gas detector head Fuse 1A Without a backup power source With a backup power source Parts to embed in a panel (panel-embedded type only) NV-100S instruction manual (this book) Test results of the equipment Warranty Option (separately sold) Rainproof cover... -
Page 5: System Structure
This equipment consists of a part that detects gas (gas detector head) and a part that indicates gas concentration and sets off an alarm (indicator and alarm unit). The parts are connected by cables. Indicator and alarm unit NV-100S Power source AC100/200V (DC24V) Alarm... -
Page 6: Dimensions And Part Names
5. Dimensions and Part Names 5-1 Indicator and Alarm Unit Fig. 2 Dimensions of the Indicator and Alarm Unit (without a backup power source) Fig. 3 Dimensions of the Indicator and Alarm Unit (with a backup power source) -
Page 7: Gas Detector
Name Function This LCD bar graph meter with backlight indicates gas concentration and the Gas concentration indicator preset alarm value. It is green during normal operation and orange on a sensor failure. It blinks Power lamp (POWER) green when the equipment is turned on and also after a failure has been taken care of to show that the equipment is warming up. -
Page 8: Installation And Wiring
6. Installation and Wiring 6-1 How to Install the Indicator and Alarm Unit The equipment can be hung on a wall or embedded in a panel. WARNING The indicator and alarm unit is not an explosion-proof construction. Install it in a non-hazardous area. CAUTION The indicator and alarm unit must be installed in a place where someone is always present and is easy to read so that taking countermeasures and notifying others in case of an alarm is possible. -
Page 9: How To Install The Gas Detector
(2) How to embed in a panel Cut out a rectangular opening in the panel as shown in Fig. 5. Fig. 5 Dimensions to Cut a Panel Insert the equipment into the opening from front. Attach the backplate on back of the equipment using the attaching screws as shown in Fig. 6. Then, fasten it to the panel with fixing screws. -
Page 10: Wiring Method
6-3 Wiring Method Refer to the gas detector’s instruction manual as well. WARNING Turn OFF the indicator and alarm unit’s power before opening the cover of the gas detector. Opening the cover when the power is on may cause a fire. Ground the equipment’s main body and the gas detector. - Page 11 External switch Control device Upper terminal block Lower terminal block 2C shielded cable Breaker Analog output Diffusion type gas detector Grounding KS-2O 4-20mA (1-5V) Fig. 7 Circuit (Diffusion type gas detector head) Control device External switch Upper terminal block Lower terminal block cable 2C shielded cable...
- Page 12 Control device External switch Upper terminal block Lower terminal block 5C or 4C shielded cable Breaker Analog output Suction type gas detector Grounding PS-4OP 4-20mA (1-5V) * Flow decline alarm function is activated when is wired. Enable the function switch No.8 (OFF side) of the indicator and alarm unit to use the function.
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Page 13: Operating Instructions
7. Operating Instructions 7-1 Notes to Users CAUTION Make sure that all parts are correctly connected before turning on the power. Check that the terminals of the gas detector and the indicator and alarm unit are correctly connected. Do not connect a load to the external alarm contact that exceeds the rated capacity. 7-2 Procedures (1) Turning ON the power Turn ON the Power switch. - Page 14 POWER POWER Change the Change the preset alarm BACUP ALARM ALARM BACK UP preset alarm value value RESET RESET BZ STOP BZ STOP AP 2 AP 1 Press the Enter key again to complete the change of the preset alarm value. The message window disappears and normal operation starts.
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Page 15: Operation Of The Equipment
7-3 Operation of the Equipment (1) When gas is detected For Lower limit alarm specification When the reading of the Gas concentration bar graph falls below the first preset alarm value, the first Alarm lamp blinks and an alarm sound is heard. When the reading falls below the second preset alarm value, the second Alarm lamp blinks. -
Page 16: When An Alarm Occurs
(4) Equipment with a backup power source 1) In case of a power failure The Backup lamp blinks red and the battery starts supplying power to the equipment so that it can continue monitoring oxygen leakage and oxygen deficiency. 2) When the battery voltage lowers below the final voltage The battery automatically stops discharging power and the equipment stops entirely. -
Page 17: How To Replace Batteries (When The Equipment Has A Backup Power Source)
Do not change the setting for modes 3 to 9. If the setting is changed, the equipment cannot properly alarm you of oxygen leakage and oxygen deficiency. NV-100S has maintenance mode functions. Select a mode using the Mode switch to use each function. The functions of the modes are described in the following table. -
Page 18: Maintenance And Inspections
8. Maintenance and Inspections Maintenance and inspections are very important for the equipment because the purpose of the equipment is to secure safety. Maintenance and inspections are the users’ responsibility. We can offer Maintenance inspections if you make a maintenance contract with us. (Contact our dealer/agency for detailed information.) As for maintenance and inspections of a gas detector, refer to the gas detector’s instruction manual. -
Page 19: Specifications
10. Specifications 10-1 Indicator and Alarm Unit Model NV-100S Principle of detection Galvanic cell Gases to be detected Oxygen (oxygen leakage/oxygen deficiency) Indicating range As specified Gas concentration indicator LCD bar graph meter with backlight Standard preset alarm value As specified (The value can be adjusted within measuring range.) Alarm accuracy Within ±1.0vol% of the preset alarm value (Conforms to JIS T 8201) -
Page 20: Glossary
11. Consumable Parts and Spare Parts Contact our dealer/agency when you need consumable parts and spare parts for NV-100S. 12. Warranty We warrant the equipment against defects for one full year from date of purchase. If the equipment malfunctions after it has been installed and is used as described in the installation instructions, instruction manual, and specifications during the warranty period, we will repair the equipment based on the terms described in the warranty.