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Constant-temperature and constant-humidity test chamber (temperature and humidity customizable)

Verification Method for Basic Parameters of Environmental Test Equipment: Low-Temperature, High-Temperature, Constant Damp‑Heat, and Cyclic Damp‑Heat Test Equipment

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Electrical conduit testing instrument

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lbt@lbt.ltd

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Constant-temperature and constant-humidity test chamber (temperature and humidity customizable)

Description

Product Introduction

The performance indicators comply with the requirements of “Verification Methods for Basic Parameters of Environmental Test Equipment for Electrical and Electronic Products: Low-Temperature, High-Temperature, Constant Damp Heat, and Cyclic Damp Heat Test Equipment.”

Product Features:

I. Structure and Materials:

A. Inner box material: Stainless steel sheet (SUS #304)

B. Outer box material: stainless steel sheet with a matte finish, or cold-rolled steel with baked enamel (optional)

C. Insulation Material: Rigid Foam and Glass Wool

D. Air Supply and Circulation System:

(1) One 90W motor

(2) Stainless steel extended shaft

(3) Multi-blade fan (SIRCCO FAN)

E. Door: Single-panel door with a single window, left-hand opening, handle on the right side.

(1) Window 260x340x40mm, 3-layer vacuum insulation

(2) Flush-mounted handle

(3) Back button: SUS #304

II. Refrigeration System:

A. Compressor: Fully hermetic compressor imported from France

B. Refrigerant: Environmentally friendly refrigerant R404A

C. Condenser: Fin-type with built-in cooling fan

D. Evaporator: Fin-type, multi-stage automatic capacity modulation

E. Other accessories: desiccant, refrigerant flow window, expansion valve

F. Expansion System: Capacity-Controlled Refrigeration System

III. Control System:

Original 7-inch 880‑display LCD touch panel, featuring on-screen dialog‑based data entry; simultaneous programmable control of temperature and humidity; curve display; and setpoint–actual value trend curves. It can display multiple alarm types separately, and in the event of a fault, the screen provides detailed fault information to facilitate troubleshooting and prevent operator errors. Equipped with multiple PID control loops and precise monitoring functions, with all data presented directly on the display.

1. Controller specifications:

a. Accuracy: Temperature ±0.1℃, Humidity ±1%RH

b. Resolution: Temperature ±0.1°C, Humidity 1% R.H.

c. Temperature slope: 0.1–9.9, user‑adjustable

d. Features upper and lower limit standby and alarm functions

e. Temperature and humidity input signal selection: PT 100 Ω × 2 (dry-bulb and wet-bulb)

f. Temperature and humidity output: 4–20 mA

g.6 Group P.I.D control parameter setting, automatic P.I.D calculation, and automatic dry-and-wet-bulb correction.

2. Screen Display Function:

a. Touch-based input, with options displayed directly on the screen

b. Direct display of setpoint (SV) and process value (PV) for temperature and humidity (in English)

c. Can display the current program number, segment number, remaining time, and loop count.

d. Cumulative Operating Time Function

e. The setpoints for temperature and humidity are displayed as graphical curves, with a real-time display of the program curve’s execution status.

f. Features a dedicated program editing screen for direct input of temperature, humidity, and time.

3. Program Capacity and Control Functions:

a. Usable program groups: up to 100 groups

b. Usable memory capacity: a total of 5,000 segments

c. Repeatable commands: Each command can be executed up to 9,999 times.

d. The program is developed using an interactive, dialogue-based approach and includes functions such as editing and clearing.

e.SEGMENTS Time setting 0–530 hours 59 minutes

f. Features power‑off program memory, automatically restarting and resuming execution upon power restoration.

g. The graphical curve can be displayed in real time during program execution.

h. Features date and time adjustment functionality

i. Button and Screen Lock (LOCK) Function

IV. Standard Configuration:

A. Power cord, 4.0 mm x 3 cores

B. One 232 output terminal

C. Stainless Steel SUS #304 Square Perforated Steel Shelf

D. Four stainless steel adjustable-spacing clips

E. One 11W energy-saving window light fixture

F. One test port with a diameter of 50 mm on the left side of the enclosure, accompanied by one stainless steel port cover.

G. One piece of nonwoven fabric for standard testing

H. One set of controller user manual and one set of operating manual

Technical Specifications:

Project	80L	100L	150L	225L	408L	800L	1000L
Inner box dimensions (W×D×H mm)	400400500	500400500	500500600	600500750	800600850	10008001000	100010001000
Outer carton dimensions (W×D×H mm)	8709501700	87010001700	97011501750	115012501900	130014001950	140015002000	150015002000
Optional temperature range	0~150℃, 20~150℃, 40~150℃, 50~150℃, 60~150℃, -70~150℃, 70~150℃
Optional humidity range	20%～98%R.H.
Power supply	220V/6KW	220V/6.5KW	220V/7KW	220V/7.5KW	220V/8KW	220V/8KW	220V/8KW
Temperature fluctuation degree	0.5
Temperature deviation	≤2℃
Heating time	Rises from room temperature to 150°C in approximately 40 minutes (no-load, nonlinear).
Cooling time	It takes approximately 60 minutes to cool from room temperature to -40°C (no-load, non-linear).
Humidity fluctuation degree	3%R.H.
Humidity deviation	≤3%

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Customer Reviews

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From Thomas Bennett, Quality Director, UK plastic pipe factory

2026.06.05

★★★★★

“We have purchased two sets of pipe testing equipment from Laibote (Tianjin) for 18 months. The ring stiffness and hydrostatic burst testing machines run stably for daily batch inspection, test data matches ISO standard requirements precisely, and the intelligent test software is easy for our operators to master. Their after-sales team offers timely remote technical guidance whenever we have operational problems, spare parts supply is efficient. We have arranged a second bulk order for our new production workshop and will recommend Laibote’s testing machines to our industry partners across Europe.”

Middle East Construction Lab｜Purchase: Universal Electronic Testing Machine & Geotextile Test Equipment

From Mohamed Kareem, Lab Manager, UAE third-party construction inspection institute

2026.06.05

★★★★★

“We compared multiple testing equipment brands from Europe and China before cooperating with Laibote. Their WDW universal tester and full-set geotextile testing instruments meet local construction testing standards perfectly. Custom fixtures tailored per our specimen specifications save much testing time. Pre-sale technical communication was patient and professional; engineers provided online operation training after goods arrived. Stable machine performance greatly improves our laboratory’s detection efficiency, we are satisfied with cost performance and overall service.”

Southeast Asia Rubber & Polymer Factory｜Purchase: Vicat Softening Point & Tensile Testing Machine

From Tanaka Hiroshi, R&D Supervisor, Indonesia rubber materials enterprise

2026.06.05

★★★★★

“Laibote’s Vicat softening point tester and electronic tensile machine have been applied to our raw material incoming inspection and new formula development for over one year. High testing accuracy effectively controls our product defect rate. What impresses us most is their responsive after-sale service; technical staff reply our troubleshooting requests within 24 hours even for time zone differences. Compared with expensive European brands, Laibote’s equipment balances quality and price excellently, we plan to expand procurement of auxiliary testing instruments next quarter.”

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Keywords:

Constant-temperature and constant-humidity test chamber (temperature and humidity customizable)

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