Kitagawa 121SE - User Manual

INSTRUCTION MANUAL
PHOSPHINE DETECTOR TUBE
No.121SE
★ READ THIS INSTRUCTION MANUAL AND THE INSTRUCTIONS OF THE ASPIRATING PUMP PRIOR
TO USING THIS PRODUCT.
★ DO NOT DISCARD CAREFULLY THIS INSTRUCTION MANUAL UNTIL ALL THE TUBES IN THIS BOX
ARE USED UP.
1. PERFORMANCE:
Measuring Range : 10 - 700 ppm 20 - 1400 ppm
and Pump Stroke : 1 pump stroke 1/2 pump stroke
(*)Graduations on the detector tube are based on 1 pump stroke.
Sampling Time : 1 minute 30 seconds
Colour Change : White → Brown
Detectable Limit : 1 ppm(1 pump stroke)
Operating Temperature : 0 - 40 ℃ (32-104°F) (No correction is necessary.)
Aspirating Pump : Model AP-20, AP-20S, 400B
CAUTION
1. THE DETECTOR TUBE CONTAINS CHEMICAL REAGENTS.
2. DO NOT TOUCH THESE REAGENTS DIRECTLY ONCE TUBES WERE BROKEN.
3. KEEP THE TUBES OUT OF THE REACH OF CHILDREN.
NOTICE
1. USE ONLY WITH PUMP MODELS AP-20, AP-20S, 400B. OTHERWISE, CONSIDERABLE ERROR
IN INDICATION MAY OCCUR.
2. BEFORE TESTING, CHECK THE ASPIRATING PUMP FOR LEAKS. (REFER TO ITEM 8.
INSPECTION OF ASPIRATING PUMP.) ANY PUMPS SHOWING SIGNS OF LEAKAGE SHOULD
BE CORRECTED BEFORE USE.
3. DO NOT USE THIS TUBE OUTSIDE THE STATED OPERATING TEMPERATURE RANGE.
4. STORE TUBES IN A COOL AND DARK PLACE (0-25 ℃/32-77°F), AND USE BEFORE
EXPIRATION DATE PRINTED ON TOP OF THE BOX.
5. PRIOR TO USE, READ ITEM 9 USER RESPONSIBILITY CAREFULLY.
6. READ THE CONCENTRATION IMMEDIATELY AFTER DRAWING THE SAMPLE.
2. SAMPLING AND MEASUREMENT:
Fig.1
① Break both ends of the detector tube.
CAUTION SAFETY GLASSES AND GLOVES SHOULD BE WORN TO PREVENT INJURY
FROM SPLINTERING GLASS.
② Insert the detector tube into the aspirating pump securely as shown in Fig.1. (Arrow mark shall point to
the pump.)
③ Align the guide marks on the shaft and stopper of the aspirating pump.
④ Pull the pump handle at a full stroke until it locks and wait for 1 minute or until the completion of sampling is
confirmed with the flow indicator of the pump. (See descriptions about the flow indicator in the instruction
manual of the pump.)
⑤ On completion of sampling, read the scale at the maximum point of the stained layer.
⑥ When the concentration is over the scale range, a 1/2 pump stroke can be used to determine concentrations of
20 to 1400 ppm.
1)Remove the detector tube from the pump.

Summary

Performance Specifications

Sampling and Measurement Procedure

Ambient Condition Corrections

Temperature Correction

Details whether temperature requires correction for readings.

Humidity Correction

Details whether humidity requires correction for readings.

Atmospheric Pressure Correction

Formula to correct readings based on atmospheric pressure.

Interference and Chemical Reaction

Disposal and Hazards

Aspirating Pump Inspection

User Responsibility

Overview

1. Function Description
2. Important Technical Specifications
3. Usage Features
4. Maintenance Features
5. Safety Precautions

This document is the instruction manual for the Kitagawa Phosphine Detector Tube, model No.121SE, used in conjunction with Kitagawa aspirating pumps. It provides essential information for the safe and accurate measurement of phosphine gas concentrations.

Function Description

The Kitagawa Phosphine Detector Tube is a chemical reagent-based device designed to measure phosphine gas concentrations in the air. It operates by drawing a sample of air through the tube using a compatible aspirating pump. Phosphine gas, if present, reacts with the chemical reagents inside the tube, causing a distinct color change from white to brown. The length of the stained layer corresponds to the concentration of phosphine, which can then be read directly from the scale printed on the tube. The device is intended for industrial hygiene and safety applications to assess phosphine levels in various environments.

Important Technical Specifications

• Measuring Range:
  • 10 - 700 ppm with 1 pump stroke
  • 20 - 1400 ppm with 1/2 pump stroke
  • Note: Graduations on the detector tube are based on 1 pump stroke.
• Sampling Time:
  • 1 minute for 1 pump stroke
  • 30 seconds for 1/2 pump stroke
• Colour Change: White to Brown
• Detectable Limit: 1 ppm (with 1 pump stroke)
• Operating Temperature: 0 - 40 °C (32 - 104 °F). No temperature correction is necessary within this range.
• Aspirating Pump Compatibility: Model AP-20, AP-20S, 400B. Using other pump models may lead to considerable errors.
• Storage Conditions: Store tubes in a cool and dark place (0-25 °C / 32-77 °F) and use before the expiration date printed on the box.
• Chemical Reaction: Phosphine reacts with a silver compound, causing the reagent to discolor.
• Interferences:
  • Hydrogen sulphide produces a yellowish-brown stain and gives higher readings.
  • Arsine and Hydrogen selenide produce similar stains and give higher readings.
  • Mercaptans or Bromine produce a yellowish stain and give higher readings.
• Hazardous Properties of Phosphine (for reference):
  • TLV-TWA (Threshold Limit Value - American Conference of Governmental Industrial Hygienists, 2019): 0.05 ppm
  • Explosion range in air: More than 1.8%

Usage Features

The detector tube is designed for straightforward use, involving a few key steps:

1. Preparation:
   • Read the instruction manual and the aspirating pump manual carefully before use.
   • Ensure safety glasses and gloves are worn to prevent injury from splintering glass when breaking tube ends.
   • Break both ends of the detector tube using a tip cutter.
2. Tube Insertion: Insert the detector tube securely into the aspirating pump, ensuring the arrow mark on the tube points towards the pump.
3. Sampling (1 pump stroke for 10-700 ppm):
   • Align the guide marks on the pump's shaft and stopper.
   • Pull the pump handle to a full stroke until it locks.
   • Wait for 1 minute, or until the flow indicator confirms sampling completion.
4. Sampling (1/2 pump stroke for 20-1400 ppm):
   • After removing the tube from the pump, turn the pump handle 1/4 (90°) and push it towards the pump.
   • Insert a new tube into the aspirating pump.
   • Pull the pump handle to a 1/2 stroke until it locks.
   • Wait for 30 seconds, or until the flow indicator confirms sampling completion.
   • Multiply the reading value by 2.
5. Reading the Concentration: Immediately after sampling, read the scale at the maximum point of the stained layer. If the stained layer is unclear or oblique, read the scale at the center between the longest and shortest points.
6. Atmospheric Pressure Correction: If the atmospheric pressure differs from 1013 hPa, correct the reading using the formula: True concentration = Tube reading X (1013 / Atmospheric pressure in hPa). No correction is needed for temperature or humidity within the specified operating range.
7. Disposal: Used tubes should be disposed of carefully according to relevant regulations.

Maintenance Features

The manual emphasizes the importance of maintaining the aspirating pump to ensure accurate readings:

• Pump Leak Check: Before each use, the aspirating pump must be checked for leaks.
  1. Insert a sealed and unbroken detector tube into the pump.
  2. Align the guide marks on the shaft and stopper.
  3. Pull the handle to a full stroke and wait for 1 minute.
  4. Unlock the handle and allow it to return slowly into the pump while holding the cylinder and handle securely. Caution: The handle will tend to snap back into the pump quickly.
  5. If the handle returns completely to its original position, the pump's performance is satisfactory. If not, refer to the pump's instruction manual for maintenance procedures to correct the leakage.
• User Responsibility: Users are solely responsible for ensuring the equipment is operated, maintained, and repaired in strict accordance with the instructions. This includes using compatible pump models, not using tubes beyond their expiration date, and ensuring tubes do not have a color change different from the performance specifications before use. The manufacturer and distributors are not liable for incorrect measurements or damages resulting from negligence or non-compliance.

Safety Precautions

• The detector tube contains chemical reagents. Do not touch these reagents directly if the tubes are broken.
• Keep the tubes out of the reach of children.
• Wear safety glasses and gloves when breaking the ends of the detector tube to prevent injury from glass splinters.
• Do not use the tube outside the stated operating temperature range.

This manual is a critical resource and should be kept until all tubes in the box have been used. Product specifications are subject to change without prior notice.

Kitagawa 121SE Specifications

General

Brand	Kitagawa
Model	121SE
Category	Security Sensors
Language	English